Which of the following statements with reagards to photosynthesis is/are correct
(A) In `C_(4)` plants, the primary `CO_(2)` acceptor is PEP
(B) In the photosynthesynthetic process PS II absorbs energy at or just below 680nm
(C ) The pigment that is present in the pigment system I is `P_(683)`
A. only III
B. Only I
C. Only III
D. I and II
