A. Photosynthestically C4 plants are less efficient then C3 plants.
R. The operaion of C4 pathway requires the involvement of only bundle-sheath cells.
(A) If Assertion (A) and reason (R) both are correct and R is explanation to A.
(B) If (A) and (R) both are correct but (R) is not an explanation to A.
(C) If A is true but R is false.
(D) If both A and R are false.
