Assertion (A): The first ionisation energy of B is less than that of Be
Assertion (R): The penetration ability of s-electron is higher than that of p-electrons the correct answer is

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 but (R) is false
D. (A) is false but (R) is true