The pigment that absorb the red and far-red light in plant is . A: cytochrome B: xanthophylls C: phytochrome D: caratene

Which of the following statements is correct? A: The two forms of the phytochrome are photochemically inconvertible B: The Pfr form converts to Pr form slowly in darkness C: The dark conversion of Pfr and Pr form appears to be restricted to the dicotyledons only D: All of the above