Blue Seas Cruiseline offers two types of dinner cruises: Regular and Executive. The contribution margin per ticket sold is $30 for the regular cruise, and $90 for the executive. Fixed costs are $210,000. It expects to sell four regular dinner cruises for every one executive dinner cruise. What is the total number of regular cruises Blue Seas must sell in order to breakeven?

A.

1,750

B.

1,000

C.

5,000

D.

4,000