test or paints sells varnish with a v

Testor Paints sells varnish with a variable cost of $6.50 per gallon. The company is unsure which price to charge in order to maximize profits. The price charged will also affect the demand. If fixed are $80,000 and the chart above represents the demand at various prices, what price should be order to maximize profits. a. $11 b. $10 c. $9 d. $8