One-Year Treasury Bills Currently Earn 2

One-year Treasury bills currently earn 2.55 percent. You expected that one year from now, one-year Treasury bill rates will increase to 2.85 percent and that two years from now, one-year Treasury bill rates will increase to 3.15 percent. If the unbiased expectations theory is correct, what should the current rate be on 3-year Treasury securities?

A) 2.55 percent
B) 2.85 percent
C) 2.93 percent
D) 3.15 percent