The figure to the right represents the demand for ice cream cones. Which of the following statements is true? A. Points a and b are derived independently of the utilityminusmaximizing model. B. Points a and b may not necessarily be the utilityminusmaximizing quantities of ice cream cones at two different prices because we have no information on the consumer's budget or the price of other goods. C. Points a and b are the utilityminusmaximizing quantities of ice cream cones at two different prices of ice cream. D. Point a could be a utilityminusmaximizing choice if the price is $3 but point b may not be because we have no information on the marginal utility per dollar when price changes