The correct decreasing order of ease of acid catalysed esterification is-
(a) CH3CH2CH2CH2OH > CH3 CH2 CH (OH) CH3 > (CH3) 2C(OH)CH3
(b) CH3CH2CH(OH)CH3 > CH3 CH2 CH2CH2 OH > (CH3)2 C(OH) CH3
(c) (CH3) 2C(OH)CH3 > CH3CH2CH (OH) CH3 > CH3 CH2 CH2 CH2OH
(d) None of the above