The answer is F, but I just want a explanation to why it is that and why everything else is wrong

9. Which of the following statements are false? Only select "All are true" if you think none of the statements are false. A. Getting more of an economic good compensates us for getting more of an economic bad. B. All else equal, if you triple the present value, the future value will triple. C. Savings bonds are a type of pure discount loan. D. For risky assets, the future value is a random variable, so we think in terms of its expected value. E. Interest rates are a type of opportunity cost. F. All are true