a) Calculate the prices, marginal revenues, and marginal costs in the evening and daytime, and total marginal costs for Q = 1, 2, ..., 10. Qe Pe MRe Qd Pd MRd MC1 MC2 MCT 1 $19 $18 1 $10 $9 $3 $5 $8 2 $18 $16 2 $9 $7 $3 $5 $8 3 $17 $14 3 $8 $5 $3 $5 $8 4 $16 $12 4 $7 $3 $3 $5 $8 5 $15 $10 5 $6 $1 $3 $5 $8 6 $14 $8 6 $5 -$1 $3 $5 $8 7 $13 $6 7 $4 -$3 $3 $5 $8 8 $12 $4 8 $3 -$5 $3 $5 $8 9 $11 $2 9 $2 -$7 $3 $5 $8 10 $10 $0 10 $1 -$9 $3 $5 $8 b) Determine the optimal prices for the dessert that the restaurant should charge during the evening hours and during the day, the associated quantities sold, and the total daily profit. The optimal price in daytime is $7 when the output is 4 . The optimal price in the evening is $14 when the output is 6 . The optimal profit is ?