When one currency appreciates, another currency must depreciate

The marginal utility of a unit of good X

A. is always greater than the total utility of X. B. is always less than the average utility of X. C. generally depends on how much X the consumer already has. D. is always equal to the price of X.

All of the following are true about electronic funds transfers except:

A. sometimes involve the Federal Reserve sending electronic images of checks to banks. B. include automated clearinghouse transactions (ACH). C. include credit card payments made online. D. occur when banks or individuals deposit/withdraw from one bank account to another electronically.