In the figure depicted to the right, suppose Jack promises Jill that if she picks the high price, he will too. Is this promise credible? O A. No, because by instead picking the low price, Jack's profit will increase. High Price Jill: $9,000 Jack: $9,000 O B. No, because this would require Jill and Jack to form a cartel. Jack 3 O C. No, because by picking the high price, Jill and Jack will be engaging in High Price Jill: $3,000 illegal price-fixing. Jack: $12,500 Low Price O D. Yes, because this will jointly maximize both Jack and Jill's profits. Jill High Price 2 Jill: $12,500 Low Price Jack: $3,000 Jack Jill: $8,000 Low Price Jack: $8,000