Seeman Furniture uses the installment-sales method. No further collections could be made on an account with a balance of $18,000. It was estimated that the repossessed furniture could be sold as is for $5,400, or for $6,300 if $300 were spent reconditioning it. The gross profit rate on the original sale was 40%. The loss on repossession was:
a. $4,800.
b. $4,500.
c. $12,000.
d. $12,600.