Cambrian Railways runs a daily container freight train between Cardiff and Birminghan Its two major customers are British Steel and the Welsh Farming Co-operative. The demand for containers by each customer is given by the equations: P 1 =500−8Q 1 for British Steel P 2=400−5Q 2 for Welsh farming. P i is the price charged by Cambrian per container, and Q i is the number of containers used by each customer. Cambrian's total cost function is given by the equation: TC=10000+20Q where Q is the number of containers per trip. a. If Q=100, will Cambrian Railways have economies of scale? b. What is the equilibrium price, quantity, and profits when Cambrian supplies British steel? c. What is the equilibrium price, quantity, and profits when Cambrian supplies to Wels Farming? d. In which market, do Cambrian railways have higher market power?