Statement-$I$: When $PS-II$ is functional,the electron is circulated within the photosystem and photophosphorylation occurs due to the cyclic flow of electrons.
Statement-$II$: The stroma lamellae membranes lack $PS-I$ as well as $NADP$ reductase enzyme.

• A
  Statement-$I$ & Statement-$II$ both are correct.
• B
  Statement-$I$ is correct & Statement-$II$ is incorrect.
• C
  Statement-$I$ is incorrect & Statement-$II$ is correct.
• D
  Statement-$I$ & Statement-$II$ both are incorrect.