There is something wrong in the name of the compound named `:`
`2-`bromo`-5-`chloro`-3-`methyl`-4-`hexene. What is wrong in this name as per `IUPAC` convention ?

Options

A. Locants are not written in descending order of their position
B. Parent chain is incorrectly numbered
C. Alkyl locant is always written first
D. Locants are not written in ascentding order of their position.

Answer

b

Explanation

Parent chain must be numbered giving lowest number to double bond as `:`

`5-` bromo`-2-`chloro`-4-`methyl`-2-`hexene