Answer:
b. it is expensive and requires a great deal of effort.
Step-by-step explanation:
selling on credit is basically lending money to customers and it can be very expensive for a small business. First of all, the risk of not getting paid always exists. Second, a small business doesn't generally have excess cash in order to finance credit sales. This means that you might probably need to borrow money yourself to finance your customers.
The good side of credit sales is that they might help you increase your total sales. But you have to calculate which is higher, the costs or the benefits.