Statement-I: Nucleophilic substitution reaction on an optically active alkyl halide gives a mixture of enantiomers.
Because Statement-II: The reaction occurs by `S_(N^(1))` mechanism.
A. If both assertion and reason are true and the reasone is the correct explanation of the assertion .
B. If both assertion and reason are true but reason is the correct explanation of the assertion .
C. If assertion is true but reasone is false
D. If assertion is false but reason is true .