Answer:
B. I and II only
Step-by-step explanation:
Assumption: Apparently there is an error in the question and option 1 has been read as, "Security A would have a higher risk premium than Security B", only then answer I and II only can be selected.
Standard deviation of a security is a measure of security risk. If a security has a higher standard deviation, it means the risk is high.
A security that has more risk would have a greater risk premium to compensate for the extra risk assumed.
Sharpe ratio denotes excess return per unit of total risk i.e standard deviation.
In the given case, security A has a higher standard deviation than security B. This means that Security A would have a higher risk premium than Security B and also since the variation of returns is high (since standard deviation is high), the range of returns for Security A in any given year would be higher than the likely range of returns for Security B.