Bob,a 16-Year-Old Minor,buys a Snowmobile from Sam,an Adult,for $2,000

Multiple Choice

Bob,a 16-year-old minor,buys a snowmobile from Sam,an adult,for $2,000.Bob uses it for 2 months and then advertises the snowmobile for sale for $3,000 but has not yet sold it.At this point,which of the following is true?

A) Bob can still disaffirm the contract.
B) Either Bob or Sam can disaffirm the contract.
C) Bob has ratified the contract by trying to sell the snowmobile.
D) Bob has ratified the contract by using the snowmobile for 2 months.