Following `2^(@)` amine has chiral carbon as indicated `H-underset(CH_(3))underset(|)overset(CH_(3))overset(|)(C)-NH_(2)`. This on reaction with `NaNO_(2)+ HCl`, from
A. `1^(@)` alcohol with reaction of configuration
B. `2^(@)` alcohol with inverted configuration
C. recemic mixture of `2^(@)` alcohol
D. recemic mixture of `1^(@)` alcohol.