Indifference curves: Suppose there are two types of shirts available to Carl: red shirts and black shirts. Suppose Carl is willing to trade three black shirts for one red shirt. (a) Illustrate Carl's situation by putting red shirts on the x-axis, black shirts on the y-axis, Draw an indifference curve and labeling the above bundle. (b) If one redshirt costs as much as two blackshirts what combination of red and black shirts would Carl likely buy additional red shirts or black shirts? Clearly explain your