A) Sedition (Section 124A IPC) is classified as Cognizable, Non-bailable, and triable by the Court of Session. B) Joining an unlawful assembly armed with a deadly weapon (Section 144 IPC) is classified as Cognizable, but Bailable, and triable by a Magistrate of the first class. A gun is a deadly weapon, so option B describes an offence under Section 144. C) Rioting, armed with a deadly weapon (Section 148 IPC) is classified as Cognizable, Non-bailable, and triable by a Magistrate of the first class. D) Bribery: If referring to Election Bribery (Section 171E IPC), it is classified as Non- cognizable and Bailable. If referring to bribery involving public servants under the Prevention of Corruption Act, such offences are generally Cognizable and Non-bailable. However, the question specifies offences "under the Indian Penal Code, 1860", making Section 171E the relevant reference, which is Non-cognizable and Bailable.