2-chloro-2-methylpentane on reaction with sodium methoxide in methanol yields:
(a) `C_(2)H_(5)CH_(2)overset(CH_(3))overset(|)underset(CH_(3))underset(|)(C)-OCH_(3)` (b) `C_(2)H_(5)CH_(2)underset(CH_(3))underset(|)(C)=CH_(2)` (c) `C_(2)H_(5)CH_(2)=underset(CH_(3))underset(|)(C)-CH_(3)`
A. Both I and III
B. only III
C. Both I and II
D. All of these