Other things equal, the days sales outstanding (DSO) of Firm A is 20 days and the days sales outstanding (DSO) of Firm B is 30 days. Which of the following statements about the firms is correct?

	a.	Firm A has a weaker collection team than Firm B.
	b.	Firm A takes more time to collect its receivables than Firm B.
	c.	Firm A provides less discount to its customers to pay its bills early than Firm B.
	d.	Firm A has tighter credit terms than Firm B.
	e.	Firm A has weaker receivables monitoring system than Firm B.