Problem 7 Part 1 Attempt 1/5 for 2 pts. The of an asset is the best measure of risk if investors hold the market portfolio, while is the best measure of risk if investors only hold a single asset or portfolio. Obeta; alpha Obeta; standard deviation standard deviation; beta standard deviation; alpha Submit Problem 8 JB Attempt 1/5 for 2 pts. Part 1 As different securities are added to a portfolio, systematic risk will fall to zero not change increase decrease Submit