The correct answer is (a).
Section 326A of the Indian Penal Code, 1860, deals with voluntarily throwing or attempting to throw acid with the intention of causing hurt. The punishment for this offence is imprisonment for a term which may extend to ten years, and fine.
Section 326B of the Indian Penal Code, 1860, deals with voluntarily throwing or attempting to throw acid with the intention of causing grievous hurt. The punishment for this offence is imprisonment for a term which may extend to life, or imprisonment for a term which may extend to ten years, and fine.
Section 228A of the Indian Penal Code, 1860, deals with voluntarily causing hurt by means of poison, acid, or other noxious liquid or substance. The punishment for this offence is imprisonment for a term which may extend to seven years, and fine.
Section 228 of the Indian Penal Code, 1860, deals with voluntarily causing hurt by dangerous weapons or means. The punishment for this offence is imprisonment for a term which may extend to two years, or fine, or both.
In the given question, the offence is voluntarily throwing or attempting to throw acid with the intention of causing hurt. This offence is punishable under Section 326A of the Indian Penal Code, 1860.