Explanation
Cruelty to a woman by husband or relative of the husband is defined under:
(B) Section 498A of IPC.
Section 498A of the Indian Penal Code (IPC) deals with the offense of cruelty by a husband or his relatives towards a woman. It states that whoever, being the husband or relative of the husband of a woman, subjects her to cruelty shall be punished with imprisonment for a term which may extend to three years and shall also be liable to fine.
Therefore, the correct answer is (B) Section 498A of IPC.