An optically active alky halide (A) `C_(4)H_(9)X` reacted
with aq. KOH and gives a product (B) `C_(4)H_(10)O`. The
compound (B) on oxdiation gives ethyl methyl
ketone. What is the structure (A) and (B) ?
A. `CH_(3) CH_(2) CH_(2)X and CH_(3) CH_(2) CH_(2)CH_(2)OH`
B. `CH_(3)CH_(2)CHXCH_(3) and CH_(3)CH_(2)CH_(2)CH_(2)OH`
C. `CH_(3)CH_(2)CH_(2)CH_(2)X and CH_(3)CHOHCH_(2)CH_(3)`
D. `CH_(3)CH_(2)CHXCH_(3) and CH_(3) CHOHCH_(2) CH_(3)`