An investоr invested $360 in а T-bill with а return оf 2% аnd $840 in a stоck with an expected return of 8% and a standard deviation of 7%. a. Calculate the expected return of this complete portfolio. [Do not type your answer in Canvas] [4 points] b. Calculate the risk of this complete portfolio. [Do not type your answer in Canvas] [2 points] c. If the risk of this complete portfolio increases from 0 to 6%, calculate the expected return of this complete portfolio. [Do not type your answer in Canvas] [4 points]