What is the Herfindahl-Hirschman index (HHI) in this market?

Suppose group price discrimination is possible but a firm chooses not to and sets the same price in each market. As a result

A) price elasticity of demand is the same in each market. B) the price-inelastic market will buy zero units. C) marginal revenue in the more price-elastic market exceeds marginal revenue in the less price-elastic market. D) the deadweight loss is less than if the firm price discriminated.

A bank has $50,000 in excess reserves and the required reserve ratio is 10 percent. This means the bank could have __________ in checkable deposit liabilities and __________ in (total) reserves

A) $500,000; $90,000 B) $100,000; $20,000 C) $50,000; $25,000 D) $250,000; $75,000