【单选题】Richard is an adult. He enters into a contract to sell sixteen-year-old Jane his car for $3,000. The next day Richard receives an offer of $4,000 for his car from twenty-year-old Bill. Richard
A.
cannot disaffirm his contract with Jane because he is an adult.
B.
can disaffirm his contract with Jane because Bill is an adult and contracts with adults take precedence over contracts with minors.
C.
cannot disaffirm his contract with Jane because she is a minor.
D.
can disaffirm his contract with Jane because the contract has not been ratified.