c. [15 marks] Consider a different firm McDuck that produces beef hamburgers using Scottish and English meat. Calling ( the quantity of hamburgers produced per day, A, the kilograms of the Scottish meat used, and K', the kilograms of English meat used, assume that McDuck's production function is as follows: Q = 10K, + 10K. Illustrate in a graph the combinations of Scottish and English meat that result into 60 ham- burgers per day. d. [15 marks] Define the marginal rate of technical substitution (MRTS) between two inputs. and calculate the MRTS along MeDuck's isoquants