Which of the following letter cluster will replace the blank (___) in the given series?

CADI, EAFI, GAHI, ______________ KALI

Correct option is A

Given:
CADI, EAFI, GAHI, ______________ KALI
Logic: 1st +2, 3rd -2 whereas 2nd and 4th are same.

First Letter: C → E → G → ? → K
The sequence increases by +2 each time.
C(3)→E(5)→G(7)→I(9)→K(11).
The missing letter is I.
Second Letter: A → A → A → A → A
The second letter remains constant as A.
Third Letter: D → F → H → ? → L
The sequence increases by +2 each time.
D(4)→F(6)→H(8)→J(10)→L(12).
The missing letter is J.
Fourth Letter: I → I → I → I → I
The fourth letter remains constant as I.
Combine the missing letters
The missing cluster is IAJI.
Correct Answer: (a) IAJI