Choose the pair in which the words are differently related.

Answer: Option B

Explanation:

The words in all other pairs are antonyms of each other.

Answer: Option D

Explanation:

All except Mustard are food grains, while mustard is an oilseed.

Answer: Option D

Explanation:

All others are synonyms.

Answer: Option C

Explanation:

In all other options second is a part of first.

Answer: Option A

Explanation:

All except Brigadier are ranks of Navy, while Brigadier is a rank of army.