Assertion (A): The second electron affinity of oxygen is endothermic.
Assertion (R): Oxygen is the second highest electronegative element

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