The graph shows the demand, marginal cost, and marginal revenue curves for a looal real-estate management company. The quantityr is the number of apartments and the price is the monthly:r rent. Price $3.500 ME $2.500 . I . MR Demand $1,500 10 20 30 110 Quantity To maximize profits, the business should offer apartments and charge per month. Select one: O A. 20; $2,500 O B. 30; $2,500 O C. 20; $2,000 O D. 20; $3,000 O E. 40; $2,000