O Ob a The main refrigerator at Parkside Grille Restaurant had a serious malfunction. Laura Casper, the owner/chef, found a very nice used replacement refrigerator, but she needed $4,500 additional cash immediately. She took out a 75-day loan at 7.5% exact simple interest. Compute the total, interest, and principal that Laura must pay for this loan. (Use a 365-day year.) a. $4,570.31 b. $4,596.35 c. $4,580.25 d. $4,569.35