Such conveyance is voidable.
Option: D
Explanation:
Voidable is a law in which two parties deal but sometimes one of them ignore it. Voidable is normally used in distinction from the outset which is unenforceable. Void is a contract in which one party needs to sign documents which is illegal. Void and voidable is little bit confusing. Voidable contract is always valid and can be enforced any time.
Invalid means documents are not in a proper manner. So the legal process cannot be run. In valid contract all the parties are legally involved and bound to perform the act accordingly.