Consider the following Assertion $(A)$: Phosphorus can form both phosphorus$(III)$ and phosphorus$(V)$ chlorides, but nitrogen cannot form nitrogen$(V)$ chloride. Reason $(R)$: The electronegativity of nitrogen is more than that of phosphorus. The correct answer is

• A
  Both $(A)$ and $(R)$ are correct, $(R)$ is the correct explanation of $(A)$
• B
  $(A)$ is correct, but $(R)$ is not correct
• C
  Both $(A)$ and $(R)$ are correct, $(R)$ is not the correct explanation of $(A)$
• D
  $(A)$ is not correct, but $(R)$ is correct