Consider a Risky Portfolio, A, with an Expected Rate of Return

Consider a risky portfolio, A, with an expected rate of return of 0.15 and a standard deviation of 0.15, that lies on a given indifference curve.Which one of the following portfolios might lie on the same indifference curve?

A) E(r) = 0.15; Standard deviation = 0.20
B) E(r) = 0.15; Standard deviation = 0.10
C) E(r) = 0.10; Standard deviation = 0.10
D) E(r) = 0.20; Standard deviation = 0.15