Which of the following is true with regards to writing off the costs of computer and telecommunications expenses on your tax return? a. it's best to depreciate the items over time. b. it's best to expense the purchase during the tax year the purchase was made. c. only 50% of the cost of the items can be written off as a business expense. d. these expenses can't be written off on a personal tax return.

Stock a has a beta of 1.2 and a standard deviation of 20%. stock b has a beta of 0.8 and a standard deviation of 25%. portfolio p has $200,000 consisting of $100,000 invested in stock a and $100,000 in stock b. which of the following statements is correct? (assume that the stocks are in equilibrium.) (a) stock b has a higher required rate of return than stock a. (b) portfolio p has a standard deviation of 22.5%. (c) portfolio p has a beta equal to 1.0. (d) more information is needed to determine the portfolio's beta. (e) stock a's returns are less highly correlated with the returns on most other stocks than are b's returns.