The first letters are: A (1), E (5), J (10)
- The positions are increasing by +4 and +5.
- A → E (1 + 4 = 5), E → J (5 + 5 = 10).
- So, the next first letter should be J + 6 = P (16).
The second letters are: C (3), G (7), L (12)
- The positions are increasing by +4 and +5.
- C → G (3 + 4 = 7), G → L (7 + 5 = 12).
- So, the next second letter should be L + 6 = R (18).
The third letters are: D (4), I (9), M (13)
- The positions are increasing by +5 and +4.
- D → I (4 + 5 = 9), I → M (9 + 4 = 13).
- So, the next third letter should be M + 5 = R (18).
Therefore, the next term in the sequence is PRR.
The correct answer is (C) : PPR