Bob, a $16-$year$-$old minor, buys a snowmobile from Sam, an adult, for $$2,000.$ Bob uses it for $8$ months and then advertises the snowmobile for sale for $$3,000$ but has not yet sold it$.$ At this point:

Bob cannot disaffirm the contract because $8$ months is not a reasonable time.

Bob can still disaffirm the contract.

Either Bob or Sam can disaffirm the contract.

Bob has ratified the contract by using the snowmobile for $8$ months