Refer to the table above. What is the equilibrium price of notebooks?

The Fed wants to keep the dollar at 0.80 euros per dollar. If the demand for dollars increases,

A) the Fed sells dollars to increase the supply of dollars and maintain the exchange rate. B) the Fed conducts persistent intervention on one side of the market. C) the Fed buys dollars to increase the supply of dollars and maintain the exchange rate. D) the Fed buys dollars to decrease the supply of dollars and maintain the exchange rate. E) the Fed sells dollars to decrease the supply of dollars and maintain the exchange rate.

Which of the following is the main disadvantage of using shells as money instead of coins?

(A) Divisibility (B) Portability (C) Uniformity (D) Durability