Bob purchased a rowing machine from Seller for use at his home. He has made several payments ($650 out of the $900 total price), but has fallen behind for the last two months. Seller has just repossessed the machine. Which statement is correct?

A. Seller must sell the rowing machine within 180 days.

B. Seller must sell the rowing machine within 90 days.

C. There is no set time in which Seller must sell the machine; Seller must just act within a "reasonable" time.

D. Seller can simply keep the machine in satisfaction of the remaining payments, without having to sell the machine.