Small businesses that are just getting off the ground often have problems with the difference between cash coming into the business and cash going out of the business. For example, if the company allows far too lenient credit sales terms, customers do not pay on time, which could cause cash to come in too slowly. That's why all businesses must keep a careful watch on their ________.
a) advance payments accounts
b) asset summarization
c) recording processes
d) cash flow
Answer: D