Given below are two statements: One is labelled as Assertion $(A)$ and the other is labelled as Reason $(R)$.
Assertion $(A)$: Both wind and water pollinated flowers are not very colourful and do not produce nectar.
Reason $(R)$: The flowers produce an enormous amount of pollen grains in wind and water pollinated flowers.
In the light of the above statements,choose the correct answer from the options given below:

• 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 $\text{NOT}$ the correct explanation of $A$.
• C
  $A$ is true but $R$ is false.
• D
  $A$ is false but $R$ is true.