Under the Bretton Woods system, U.S. dollars were redeemable for ________ only if the dollars were presented by a foreign central bank

Which of the following costs can be positive when output is zero?

A) average variable cost B) total variable cost C) marginal cost D) total fixed cost E) None of the above because when output is zero there are no costs.

A binding minimum wage creates a shortage of labor

a. True b. False Indicate whether the statement is true or false