Aggregate demand determines output in the short run if prices are flexible

Briefly describe the following types of financial intermediaries:

1. Commercial bank 2. Investment bank 3. Mutual fund 4. Hedge fund 5. Pension fund 6. Insurance company

Selling the same product under different brand names allows a firm to price discriminate as long as

A) customers know the products are identical. B) customers do not know the products are identical. C) the products really are not the same. D) the firm lets customers know that the products are identical.