Choose the option which show correct preferential order of groups among the following

Options

A. `-COOH, -CHO, - OH, -NH_2`
B. ` -NH_2, -OH, - CHO, - COOH `
C. `-COOH,-OH,-NH_2,-CHO`
D. `-COOH,-NH_2,-CHO,-OH`

Explanation

The choice of principal functional group is made on the basis of the following order.
Carboxylic acid `gt` sulphonic acid `gt` anhydrides `gt` esters `gt` acid halides `gt` acid amides `gt` nitriles `gt` aldehydes `gt` ketones `gt` alcohols `gt` amines