(A) Leaking state secrets (Cypher Case)
(B) Corruption Case
(C) Money Laundering Case
(D) Misuse of Power

The answer is (A) Leaking state secrets (Cypher Case)

What is a Cypher?
The cypher is a secret or encryption of words which restricted diplomatic communication written in some kind of code language.

What is the ‘cypher’ case?

The “cypher” case is refereed to a letter which Imran Khan showed as a proof saying he was removed because of a US conspiracy backed by the Establishment (Pakistan’s powerful military).