Freeman Company's accounting records include the following information:

Payments to suppliers $50,000

Collections on accounts receivable 90,000

Cash sales 20,000

Income taxes paid 5,000

Equipment purchased 15,000

What is the amount of net cash provided by operating activities indicated by these transactions?

a. $40,000.

b. $45,000.

c. $55,000.

d. $60,000.