Breaking down the not applicable reasons for clarity

Author: memildin

articles/security-center/built-in-vulnerability-assessment.md

@@ -182,11 +182,17 @@ Some updates to the vulnerability scanner extension may require manual deploymen
     1. When the VM's status is "Running", deploy the extension as described above in [Deploying the Qualys built-in vulnerability scanner](#deploying-the-qualys-built-in-vulnerability-scanner).
 
 ### Why does my VM show as "not applicable" in the recommendation?
-When you open the recommendation, you'll see your VMs in one or more of the following groups:
+The recommendation details page for the **"Enable the built-in vulnerability assessment solution on virtual machines (powered by Qualys)"** lists your VMs in one or more of the following groups: **Healthy resources**, **Unhealthy resources**, and **Not applicable resources**.
 
-- **Healthy resources** – the vulnerability scanner extension has been deployed to these VMs.
-- **Unhealthy resources** – the vulnerability scanner extension can be deployed to these VMs. 
-- **Not applicable resources** – These VMs can't have the vulnerability scanner extension deployed. Your VM might be in this tab because it's on the free pricing tier, it's missing the ImageReference class (relevant to custom images and VMs restored from backup, as explained in [this Azure for .NET page](https://docs.microsoft.com/dotnet/api/microsoft.azure.batch.imagereference?view=azure-dotnet)), or it's not running one of the supported OSes:
+If you have VMs in the **Not applicable resources** group it means Security Center can't deploy the vulnerability scanner extension on those VMs. 
+
+Your VM might be in this tab because:
+
+- It's on the free pricing tier - As explained above, the vulnerability scanner included with Azure Security Center is  only available to users on the standard pricing tier.
+
+- It's missing the ImageReference class (relevant to custom images and VMs restored from backup, as explained in [this Azure for .NET page](https://docs.microsoft.com/dotnet/api/microsoft.azure.batch.imagereference?view=azure-dotnet)).
+
+- It's not running one of the supported OSes:
 
     | **Vendor** | **OS** | **Supported versions** |
     |----|----|----|