What is the validity of the registration certificate?

The correct answer is D. Valid till it is cancelled.

The registration certificate is a document that is issued to a company or organization by the government. It is a proof of registration and allows the company or organization to carry out its activities legally. The registration certificate is valid until it is cancelled by the government.

Option A is incorrect because the registration certificate is not valid for five years. It is valid until it is cancelled.

Option B is incorrect because the registration certificate is not valid for ten years. It is valid until it is cancelled.

Option C is incorrect because the registration certificate does have a validity period. It is valid until it is cancelled.