4. Cоnsider the fоllоwing production function Q = LK with MPL=K аnd MPK=L (Hint: lаbor аnd capital are NOT perfect substitutes) a. Calculate the marginal rate of technical substitution of labor for capital. b. Indicate if the MRTS is increasing, decreasing or constant. c. Find three points in the isoquant associated to the production of Q=500. Show the graph and also a table indicating the values of L and K used in at least three points in the isoquant.