Assertion . Pili are tubular structures present in bacteria which help in conjugation
Reason. Formation of pili is controlled by `F^(+)` or fertility factor.

Options

A. If both assertion and reason are true and reason is the correct explanation of assertion.
B. If both assertion and reason are true but reason is not the correct explanation of assertion.
C. If assertion is true but reason is false.
D. If both assertion and reason are false.

Answer

B