Mio Canoe Livery Rents Canoes and Transports Canoes and Customers

Mio Canoe Livery rents canoes and transports canoes and customers to and from their canoe trip on a local river. The trip is priced at $20 per person and has a CM ratio of 30%. Mio's fixed expenses are $84,000. Last year, sales were $400,000 and profit was $36,000. How many units need to be sold to break-even, and how many need to be sold to earn a profit of $42,000?

A) 1,800 and 2,100
B) 6,000 and 8,143
C) 14,000 and 21,000
D) 4,200 and 6,300