Y, a Muslim executes a deed in respect of an immovable property in favour of 'Z' and gets the same registered, but the delivery of possession is not given to 'Z'

A. Gift is complete and valid the moment registration is done

B. Gift is incomplete and thus void

C. Gift is complete but voidable at the instance of heirs

D. Gift is incomplete but can be ratified by the court

Answer: Option B