The market for sports performance drinks experienced a big shift in 2012 as sales of low-calorie sports drinks grew by over 25%. Many attributed this shift to greater use by women who wanted a sports drink without many calories. a. If a woman desires two containers of low-calorie sports drink as much as one container of high-calorie sports drink, what do her indifference curves (between low- and high-calories sports drinks) look like? b. Do they have the typical shape of indifference curves? Why or why not?