Which of the following letter-number clusters will replace the question mark (?) in the given series to make it logically complete?
AEC10, FJH15, KOM20, PTR25, ? ​

Given: AEC10, FJH15, KOM20, PTR25, ?

Logic: Letters and number are increasing + 5 place.

A + 5 = F, F + 5 = K, K + 5 = P, P + 5 = ​U

E + 5 = J, J + 5 = O, O + 5 = T, T + 5 = Y

C + 5 = H, H + 5 = M, M + 5 = R, R + 5 = W

10 + 5 = 15, 15 + 5 = 20, 20 + 5 = 25, 25 + 5 = 30

So, the missing term is UYW30.

Thus, correct option is (c).