We use market model to test CAMP. Suppose you have 5-year monthly data on the excess returns on a fund manager's portfolio ('fund ABC') and the excess returns on a market index (wherer ABC is the return on fund ABC, rf is the risk-free rate and r M is the return on the market index). The last two months' data are given in the table: Yeart Excess return on fund ABC Excess return on market index ABC: - 19th -0.05 0.5 20th 0.22 0.8 Question A: What is the estimated alpha of Fund ABC? Question B: What is the estimated beta of Fund ABC? Question C: Write down the estimated market model