Use the following information for questions 3-5. The expected rates of return are 10%, 12%, 16%, 8% and 2%. There are equal probabilities in each case. Q4. In the above case, for every 100 units of reward (return) there are approximately, a. 20 units of risk b. 30 units of risk c. 40 units of risk d. 48 units of risk e. None of the above