The order of reactivity of following alcohols with halogen acids is……….
(A) `CH_(3)CH_(2)-CH_(2)-OH` (B) `CH_(3CH_(2)-underset(CH_(3))underset(|)"CH"-OH`
`(C ) CH_(3)CH_(2)-underset(CH_(3))underset(|)overset(CH_(3))overset(|)C-OH`
A. (A)gt(B)gt(C)
B. (C)gt(B)gt(A)
C. BgtAgtC
D. AgtCgtB