Which of the Following Statements Regarding Important Porphyrins and Chlorins

Which of the following statements regarding important porphyrins and chlorins found in nature is NOT correct?

A) Chlorophyll can absorb red and blue light owing to the presence of delocalized p electrons in the chlorin ring.
B) Chlorophyll contains a central Mg²⁺ ion in a chlorin ring structure.
C) Carbon monoxide binds at the axial site of the Fe²⁺ ion in heme more strongly than oxygen,which prevents O₂ from being taken up and transported through the body.
D) Cytochromes contain Fe²⁺ ions that bind oxygen during metabolic processes,which allows O₂ to be transported into and out of cells.
E) All of these are correct.