`CH_(3)-Br+NaO-underset(CH_(3))underset(|)overset(CH_(3))overset(|)C-CH_(3)to` ?
A. `CH_(3)-O-underset(CH_(3))underset(|)overset(CH_(3))overset(|)C-CH_(3)`
B. `CH_(3)-underset(CH_(3))underset(|)overset(CH_(2))overset(||)(C)`
C. `CH_(2)=CH_(2)`
D. `CH_(3)-O-underset(CH_(3))underset(|)(CH)-CH_(3)`