Question

Scenario:

John and Mary are about to get married. Prior to their wedding, Mary's parents generously offered to donate a house and lot to them as a gift propter nuptias, with the condition that the property will be exclusively owned by Mary. However, after seeking legal advice, John discovered that the donation made by Mary's parents may be considered void under certain circumstances.

Based on the given scenario and relevant provisions of the Family Code, answer the following questions:

1. Enumerate and explain the grounds for the voidness of donations propter nuptias under the Family Code.
2. Discuss the effects of the voidness of the donation in terms of ownership and disposition of the donated property.
3. In case the donation is found to be void, what remedies are available to the parties involved in order to resolve the issue?