behati bought a couch at a store that was having a "buy now, pay later" sale. she bought the couch for $800, bust she doesn't have to pay anything for 60-days. in 60 days, she will have to pay $800 plus $50 in interest. Which type of credit did she use? an installment sales credit, an installment cash credit, a single lump-sum credit, a bank line of credit