Pacific Coast Waterpark sells half of its tickets for the regular price of $ 70. The other half go to senior citizens and children for the discounted price of $ 50. Variable cost per guest is $ 10 for both groups, and fixed costs total $ 30,000 per month. What is Pacific Coast's breakeven point in total guests? Regular guests? Discount guests?

A.625;313;313

B.429;215;215

C.600;300;300

D.300;150;150