Use the Following to Answer Question

Multiple Choice

Use the following to answer question:
-(Table: Demand for Solar Water Heaters) Use Table: Demand for Solar Water Heaters.The marginal cost of producing solar water heaters is zero,and only two firms,Rheem and Calefi,produce them.If they agree to collude,what price will the cartel charge and how many water heaters will the cartel sell?

A) $1,000;50
B) $1,100;45
C) $900;55
D) $800;60