Correct option is A
In J-K flip-flop, if both the inputs are same then it behaves like T flip-flop.
A T flip-flop is like a JK flip-flop. These are basically a single input version of JK flip-flops.
This modified form of JK flip-flop is obtained by connecting both inputs J and K together.
It has only one input along with the clock input.
Truth table of T Flip flop