Correct option is D)
Solution
Option (D) is the correct answer
+-------------------------+-----------------------+------+
| Letters in Words | Letters in alphabets | |
+-------------------------+-----------------------+------+
| 1. | PUR | PQR |
| | | |
+-------------------------+-----------------------+------+
| 2. | REPU | RSTU |
+-------------------------+-----------------------+------+
| 3. | USS | STU |
+-------------------------+-----------------------+------+
| 4. | ON | NO |
+-------------------------+-----------------------+------+