There Is a 30% Probability That an Office Building Will

Multiple Choice

There is a 30% probability that an office building will be sold after five years for $30 million, a 50% probability that it will be sold for $20 million and a 20% probability that it will be sold for $10 million.What is the expected value of the office building in five years?

A) $20 million
B) $21 million
C) $30 million
D) $10 million