Assertion (A) : The basic nature of VA group hydrides decreases from ammonia to bismuthine
Reason (R) : Availbility of lone pair on the central atom is hydrides decreases down tha group.

Options

A. Both (A) and (R) are true and (R) is the correct explanation of (A)
B. Both (A) and (R) are true and (R) is not the correct explanation of (A)
C. (A) is true and (R) is false
D. (A) is false but (R) is true

Answer

A