This is a coding-based question, where the word "COVER" has been encoded as "18522153," and "STIND" is encoded as "111492019." The pattern involves assigning each letter of the word a corresponding numeric value based on their position in the alphabet and then concatenating the values. Using the same pattern, the word "PLATE" is encoded as "52011216."
Thus, the correct answer is (A) 52011216.