Many business sell goods and services to their customers on a credit basis, allowing customers to pay for their purchases over a period of time. Which of the following is an advantage of credit sales? None of the answer choices are correct. Delayed receipt of cash Increases the seller's revenue Bad debt costs Increased wage costs A machine is purchased on January 1, 2016, for $80,000. It is estimated to have a useful life of 4 years and a residual value of $6,000. The total output units the machine can produce are 50,000. In 2016, 10,000 units are produced. Under the units-of-production method, what is the book value of the machine on December 31, 2016? $64,000 $65,200 $61,500 O None of the answer choices are correct $59.200