`Ph-CH_(2)-underset(OH)underset(|)(CH)-CH_(3) overset(K)(rarr) overset(C_(2)H_(5)Br)(rarr) (A)`
Product (A) in above reaction is :
A. `Ph-CH_(2)-underset(OEt)underset(|)(CH)-CH_(3)`, (inversion)
B. `Ph-CH_(2)-underset(O Et)underset(|)(CH)-CH_(3)`, (retention)
C. `Ph-CH_(2)-underset(O Et)underset(|)(CH)-CH_(3)`, (racemic)
D. `Ph-CH=CH-CH_(3)`
