O, P
P, Q
R, R
S, R
Answer is Right!
Answer is Wrong!
The correct answer is A. O, P.
The given sequence is a simple alternating repetition of the letters C, F, X, I, V, L, T, O, P. The first letter is C, the second letter is F, the third letter is X, and so on. The first letter of the second half of the sequence is O, and the second letter of the second half of the sequence is P.
Option B is incorrect because P is not the next letter in the sequence. Option C is incorrect because R is not the next letter in the sequence. Option D is incorrect because S is not the next letter in the sequence.