When an arbitrage opportunity exists, what happens in the market? O a. The combined actions of all arbitrageurs result in sustained profits to all O b. The combined actions of all arbitrageurs force the prices to converge O c. The combined actions of arbitrageurs result in a locked-limit situation O d. The combined actions of all arbitrageurs force the price to diverge When interest rates are constant, futures prices are most likely O a greater than forward prices O b. less than forward prices O c. equal to forward prices O d. Less than option prices