The answer is: A
Explanation
The correct option is A: Cognisable & non-bailable offence.
This is because voluntarily causing grievous hurt to deter public servant from his duty is an offence under Section 333 of the Indian Penal Code, 1860. According to the First Schedule of the Code of Criminal Procedure, 1973, this offence is classified as cognisable and non-bailable. This means that a police officer can arrest the accused without a warrant and the accused cannot claim bail as a matter of right. The offence is also triable by a Court of Session, which is a higher court than a Magistrate's court.
The other options are incorrect because they do not match with the legal classification and effect of the offence. Option B is wrong because the offence is not non-cognisable or bailable. Option C is wrong because the offence is not bailable. Option D is wrong because it does not offer any alternative answer.