David spends his budget on chocolate and chip. His utility function is given by (1 , 2) =212 , where 1 is the number of chocolates he consumers per week, and 2 is the number ofchips he buys per week. A chocolate costs 10 SEK, and a chip costs 20 SEK. David's weeklybudge for consuming on these two goods is 120 SEK. (1) What is David's budge line? Draw the budget line on a graph with chocolate amounts on the horizontal axis and chip amounts on the vertical axis. Write explicitly at which points budget line crosses the axis. (2) What is David's marginal utilities for the two goods, respectively? What is his marginal rate of substitution between the two goods? (3) What is David's optimal choice? Calculate the numerical answer for the optimal bundle. Also draw an indifference curve for David on the same graph as question (1) and show the optimal bundle