Updates : keys -> ans

keys is a function for javascript which is giving error in some browsers

Author: RounabhSahu

script.js

@@ -1,13 +1,13 @@
 
 // chanage keys value
-const keys = "CABDAAAAACDAADBABAABCAABDBABBCDABCCBCDAD";
-const len = keys.length;
+const ans = "CABDAAAAACDAADBABAABCAABDBABBCDABCCBCDAD";
+const len = ans.length;
 
 let i = 0;
 
 const inter = setInterval(
   () => {
-    document.querySelector(`#${keys[i]}_${i+1}`).click(); // select the correct option
+    document.querySelector(`#${ans[i]}_${i+1}`).click(); // select the correct option
     document.querySelector("#main_div > div.tableWidthPercent > div.onlineTestLeftDiv > div.qnav > span.saveNextButton > a").click(); // move to next question
     i++;