Which of the following factors will increase the risk level of an investment? I. a firm's decision to use a high percentage of debt financing II. an economic situation in which consumer prices are rising at a rapid rate III. the ability to trade the investment in a broad market rather than in a thin market IV. unstable currency values

Select one:

a. I and II only

b. I, II and IV only

c. II and IV only

d. I, III and IV only