QUESTION 15 Bob's Hot Tubs Inc. sold $200,000 worth of hot tubs in 20X6. A three-year comprehensive warranty is included in the sales price. Historically, warranty costs have averaged 2% of total sales. During 20X6, the firm incurred $2,000 to service goods sold in 20x5 and $400 to service goods sold in 20X6. What was Bob's warranty expense for 20X6? 0 a $4,000b.$400 $2,000 $2,400