Suppose that there are two calls on the same stock: one with exercise price K of $30, the other $35. The market value of the call with K = $30 is $2 while that for call with K=$35 is $1.5. What positions you need to take in each of the options to create a bullish call spread? Bearish call spread? Describe the payoffs at various stock prices with a set of equations or table, for each strategy. Show all work.