The investment portfolio of a large insurance company has the following three equally likely outcomes: 6%, 18%, and 33%. Calculate the expected return and the standard deviation of the rate of return for this portfolio. Round your answers to the nearest tenth of a percent.

A) E(r) = 14.3%; Sdv(r) = 0%

B) E(r) = 28.5%; Sdv(r) = 19.1%

C) E(r) = 19.0%; Sdv(r) = 0%.

D) E(r) = 19.0%; Sdv(r) = 11.0%.