Miron Floren, of Lawrence Welk Show fame, now tours the country performing at accordion concerts. A careful analysis of demand for tickets to Mr. Floren's concerts reveals a strange segmentation in the market. Demand for tickets by senior citizens is described by lo = 500P-3/2 while demand by those under 65 years old is ly = 50P4. If the marginal cost or a ticket is $3, how should tickets to Mr. Floren's concerts be priced to maximize profits? a. $ 9 for senior citizens and $4 for those younger b. $12 for senior citizens and $4.50 for those younger c. $3 for senior citizens and $8 for those younger d. $4.71 for all tickets e . $6 for senior citizens and $12 for those younger