A couple wants to get married. The groom is $18$ and the bride is $16.$ They cannot legally marry in Florida. They travel to Charleston SC where a $16$ year old may legally marry. They return to Florida and want to buy a house as husband and wife. Which is most correct

Florida must recognize the marriage as legal, even though it violates Florida law.

Florida may recognize the marriage as legal.

Florida cannot recognize the marriage as legal because it violates Florida law.

The couple must get married again in Florida once the bride is $18$