Which form is to be used for registration?

Answer: Option C

Application for Registration (Other than a non-resident taxable person, a person supplying online information and data base access or retrieval services from a place outside India to a non-taxable online recipient referred to in section 14 of the Integrated Goods and Services Tax Act, a person required to deduct tax at source under section 51 and a person required to collect tax at source under section 52))