Most U.S. currency held outside the U.S. banking system is held by foreigners

Given the data in the above table, income of $13, a price of $1 for a bottle of water and $2 for a hamburger, what is the quantity of water and the quantity of hamburgers that will maximize the consumer's total utility?

A) 5 bottles of water and 4 hamburgers B) 4 bottles of water and 4 hamburgers C) 1 bottle of water and 6 hamburgers D) 6 bottles of water and 6 hamburgers

Assume that the reserve—deposit ratio is 0.2. The Federal Reserve carries out open-market operations, purchasing $1,000,000 worth of bonds from banks. This action increased the money supply by $2,600,000. What is the currency—deposit ratio?

A) 0.2 B) 0.3 C) 0.4 D) 0.5