ABC Corporation began operations on January 1st of this year with a cash balance of $250,000. ABC had sales of $200,000 for the month of January, all on credit. ABC allows its customers 30 days to pay. ABC's expenses for January equal $150,000, and ABC's ending balance in accounts payable at January 31st is $50,000. In its cash budget for January, ABC's ending cash balance should be equal to

a. $300,000 because of GAAP accrual accounting rules.

b. $150,000.

c. $200,000.

d. $100,000.