Classify the following compounds as primary, secondary and tertiary halides.
(i) 1-bromobut-2-ene
(ii). 4-Bromopent-2-ene
(iii). 2-Bromo-2-methylpropane
A. (i)-secondary,(ii)-tertiary,(iii)-primary
B. (i)-secondary,(ii)-primary,(iii)-tertiary
C. (i)-primary,(ii)-tertiary,(iii)-secondary
D. (i)-primary,(ii)-secondary,(iii)-tertiary