For questions 6 - 9 use the following information. Robi Inc. is the dominant producer of battery-powered yard equipment. Demand for Robi's products increases with the price of gasoline is high: Q- 56 - 2 P + 2 . PG where Q is the quantity of Robi's products, P is the price of Robi's products, and Pe is the price of gasoline. Currently, the price Pc of gasoline is $2.00. 9. For this question, we no longer make any particular assumption about Pc. Assume that Robi's marginal cost is MC/ 7. If the profit-maximizing quantity for Robi is Q = 22, what is Pc? A. Pe = $1.00 B. P. =$1.50 C. PG = $2.00 D. PG = $2.50 E. None of the other choices is correct