Baker Company started business in October and collects 60% of its accounts receivable in the month of sale; 30% the following month; 5% the month after that; and 5% never collected. If all sales are on account and October sales were $60,000; November sales were $80,000; and December sales were $100,000, how much cash was collected in December

a. $60,000

b. $84,000

c. $87,000

d. $90,000

e. None of the above