Andrea is shopping for items for her pet sitting business because the store is having a sale where everything in the store is 5% off. Andrea buys a cat carrier for $39.99 and a cat tower for $19.99. She has a coupon for an additional 15% off on the cat tower. Before tax, Andrea estimates that her total, after discounts, will be about $54. Determine if Andrea has estimated correctly.a.Yes. Andrea has estimated correctly.b.No. Andrea has taken 20% of the total, which is not correct..c.No. Andrea has taken successive discounts on the total, but the coupon is just on the cat tower.d.No. Andrea has only taken the 5% discount on the cat tower and not on the carrier.