Answer is C.
MVI A 30H // Move 30H into the accumulator
Accumulator contains 0011 0000
ACI 30 H //Add 30H to the contents of accumulator
Accumulator contains 0110 0000
XRA A //XOR with Accumulator
Accumulator contents becomes 0000 0000
POP // top of the stack will be copied to H register. It do not affect the contents of Accumulator
Finally the Contents of the Accumulator are 0000 0000 I.e. 00H