Assertion :- Vascular cambium activity is not uniform throughout the year in temperate regions
Reason :- Vascular cambium activity is under the control of many physiological and environmental factors.
A. If both Assertion & Reason are True & Reason is a correct explanation of the Assertion.
B. If both Assertion & Reason are True but the Reason is a correct explanation of the Assertion.
C. If Assertion is True but the Reason is False.
D. If both Assertion & Reason are false.