Let $p$ and $q$ denote the following statements:
$p$: The sun is shining
$q$: $I$ shall play tennis in the afternoon
The negation of the statement "If the sun is shining then $I$ shall play tennis in the afternoon" is:

• A
  $q \Rightarrow \sim p$
• B
  $q \wedge \sim p$
• C
  $p \wedge \sim q$
• D
  $\sim q \Rightarrow \sim p$