Madeline, age $17,$ ordered a pair of diamond earrings on the installment plan. She paid $$50$ every month until she turned $18,$ the age of majority. The next day, she sold them to Samantha and disaffirmed the contract. Which of the following is true of this scenario?

a$.$ Madeline is still liable since she had to disaffirm before her eighteenth birthday.

b$.$ Madeline is not liable because earrings are not necessaries.

c$.$ Madeline is still liable because she used the earrings.

d$.$ Madeline is still liable because selling the earrings amounted to a ratification.