A permanent increase in the domestic money supply under a flexible exchange rate regime, A) must ultimately lead to a proportional decrease in E, and, therefore, the expected future exchange rate must rise proportionally. B) must ultimately lead to a proportional decrease in E, and, therefore, the expected future exchange rate must decrease proportionally. C) must ultimately lead to a proportional rise in E, and, therefore, the expected future exchange rate must rise proportionally. D) must ultimately lead to a proportional rise in E, and, therefore, the expected future exchange rate must rise more than proportionally. E) must ultimately lead to a proportional rise in E, and, therefore, the expected future exchange rate must rise less than proportionally