The 15 homes in a new development are each to be sold for one of three different prices so that the developer receives an average (arithmetic mean) of $200,000 per home. If 4 of the homes are to be sold for $170,000 each and 5 are to be sold for $200,000 each, what will be the selling price of each of the remaining 6 homes?
                    
                
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                A$200,000
                            
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                B$210,000
                            
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                C $215,000
                            
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                D$220,000
                            
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                E$230,000