The Redox Centers PSII,PbRC,PbRC from Rps.viridis,and Cytochrome B₆f

The redox centers PSII,PbRC,PbRC from Rps.viridis,and cytochrome b₆f

A) have identical prosthetic groups that differ only in sequence of arrangement and spatial orientation.
B) have some degree of symmetry either based on their prosthetic groups or based on tertiary protein structure.
C) all become reduced due to activity of the OEC.
D) all of the above
E) none of the above