is the minimum amount which must be remained in a margin account Select one: O A. None of these O B. Initial margin O C. Maintenance margin O D. Variation margin The payoffs for financial derivatives are linked to Select one: O A. The volatility of interest rates O B. none of the above. O C. Securities that will be issued in the future O D. Previously issued securities All other things held constant premium on options will increase when the Select one: O A. Exercise price increases O B. Volatility of the underlying assets fails O C. Term to maturity increases