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 2005 and $400 to service goods sold in 20X6. What was Bob's warranty expense for 20X6? O a $2,400 Ob. 5400 $2,000 Od. $4,000