24. Large multinational firms such as Procter & Gamble Co. face risks from the FX market because a. it may sometimes not allow them to purchase certain scarce currencies that they need. b. the instability of FX rates can generate instability in the USD value of their foreign profits and assets. c. it is often an environment within which large firms practice unfair competition. d. of the uncertain financial stability of the large banks providing FX services for them