Answer:
b) only systematic risk, while standard deviation is a measure of total risk.
Explanation:
Standard deviation is measure of the total risks of an investment. It measures the volatility in return of an investment as a result of both systematic and non-systematic risks. Non-systematic risk includes risk that are unique to a company like poor management, legal suit against the company .
Beta on the hand measures of only systematic risk. Systematic risk is the deviation of return of an investment form the average market return due to economic-wide factors like inflation, interest rate, exchange rate e.t.c
b. only systematic risk, while standard deviation is a measure of total risk.