Which ONE of the followings statements is CORRECT?

Anthony and Barbara want the accrual system to apply to their marriage and they conclude an antenuptial contract before their marriage.

a$.$ The accrual system will not apply to their marriage, unless they have opted to include it$.$

b$.$ The accrual system is a form of marriage in community of property.

c$.$ The antenuptial contract will not be binding on the spouses if the has not been notarially executed and registered at a deeds office.

d$.$ The antenuptial contract will not be binding on third parties, unless it has been notarially executed and registered at a deeds office.