Photosynthesis is the process in which the phosphorylation of ADP to generate ATP occurs with the help of sunlight energy. Following are the requirements of cyclic and noncyclic phosphorylations occurring in green plants. Choose the correct option(s) related to cyclic photophosphorylation.

A

Photosystem II is not involved

B

Only ATP molecules are generated but no NADH

C

Water is required

D

$$P680$$ is the active reaction center