Why are there 6T states in opcode fetch of CALL instead of 4?

Question

My question is why are there 6T states in opcode fetch of the CALL instruction while there are 4 for other instructions in 8085 microprocessor. I have searched a lot but did

Answer 1

4 T states are used to fetch the opcode; 2 T states are used to decrement the Stack Pointer (SP). Because on top of the stack nothing is stored.