Consider the following pairs.
Name : Formula
1] 2-Bromopropane : $$(CH_{3})2C=CHCOCH_{3}$$
2] Propan-1-amine : $$CH_{3}-CH_{2}-CH_{2}-NH_{2}$$
3] Dichloromethane :$$CH_{2}Cl_{2}$$
4] 4-Methylpent-3-en-2-one : $$CH_{3}-CHBr-CH_{3}$$

A

1 and 4 only

B

3 and 4 only

C

2 and 3 only

D

2 , 3 and 4 only