Suppose you work For a government. You need to choose which vaccine you should buy between vaccine A and vaccine B using the government budget $1, (1100. Research shows that they both have the same effect. Suppose that the unit prices of vaccine A and vaccine B are $25 and $20, respectively. {a} How many units of vaccine can you buy? Which vaccine will you buy? {b} Draw a graph oF the indierence curve and budget constraint and mark the optimal bundle. {c} Suppose now that the price of vaccine B increases to $25. How do your answers For {a} and (1)) change