Which of the following is true about the discount rate?

A$.$ The discount rate is the same as the federal funds rate.

B$.$ The discount rate is decreased during economic boom times.

C$.$ The discount rate is determined by the U$.$S$.$ Treasury.

D$.$ The discount rate is the interest rate charged to banks when they borrow emergency funds from the Federal Reserve.

E$.$ The discount rate has no impact on economic growth.