Hung Left School When He Was 16 Years Old and Started

Hung left school when he was 16 years old and started a business of shopping for people and delivering the purchases to their homes.He leased a small car by claiming he was 20 years old.Hung became ill and his business failed.The leasing company has sued him for breach of contract.Under the common law in regard to minors,the likely outcome would be that:

A) Hung is liable because the contract was a beneficial contract of service.
B) Hung is not liable because the leasing company knew his real age,or should have made proper checks about his claims.
C) Hung is not liable because the contract was a trading contract.
D) Hung is liable because the contract was a contract for necessaries.