Answer:
B) B dominates A
Step-by-step explanation:
A has expected return of 8%, and 12% standard deviation. This means 12% of the time it is not so, meaning it should work 88% of the time.
B has expected return of 10%, and 20% standard deviation. This means 20% of the time it is not so, meaning it should work 80% of the time.
For A, 8x88 = 704
For B, 10x80 = 800
B dominates.