Assertion :- Hydrogen bonds between hase pairs it is only mean to stabilise helical structure.
Reason : Plane of one base pair stacks over other have no role in stability of DNA helics.

Options

A. If both Assertion & Reason are True & the Reason is a correct explanation of the Assertion.
B. If both Assertion & Reason are trur but Reason is not a correct explanation of the Assertion.
C. If Assertion is True but the Reason is Flase.
D. If both Assertion & Reason are false.

Answer

D