Select the alphanumeric-cluster from among the given options that can replace the question mark (?) in the following series.

2D, 3I, 4P, ?

Given: 2D, 3I, 4P, ?

Logic: Number increases by +1, and letter position follows n² (2², 3², 4², 5²) pattern.

Number Pattern:
2 → 3 → 4 → 5

D (4th letter) → I (9th letter) → P (16th letter) → ?
Letter positions follow the square number sequence:
D → 4 (2²)
I → 9 (3²)
P → 16 (4²)
? → 5² = 25th letter = Y

Therefore, next term = 5Y
Thus, the correct option is (c) 5Y.