Orlando bought a new couch for $2,904, using the furniture store's finance plan. He will pay $121 a month for 24 months. Which equation can Orlando use to find out how much money he still owes after each month of the plan?
a. y= 2,904 + 121xB. y= 2,904 - 121xC. y= 121x - 2,904D. y= 121x