Assertion: Photosynthetically `C_(4)` plants are less efficient than `C_(3)` plants.
Reason: The operation of `C_(4)` pathway requires the involvement of only bundle-sheath cells.
A. If both Assertion and Reason are true and the Reason is a correct explanation of the Assertion.
B. If both Assertion and Reason are true but Reason is not a correct explanation of the Assertion.
C. If Assertion and Reason are true but Reason is not a correct explanation of the Assertion.
D. If Assertion is true but the Reason is false.
