According to Greenspan, which of the following is the role of Fed

A．He warned them not to wait to buy stocks or houses.
B．He warned them not to think the value of stocks or houses will rise permanently.
C．He warned them that the stocks and houses should be priority.
D．He warned them that the price of stocks and houses would decrease next year.

A．The Fed will raise the interest rate to control the potential inflation.
B．The Fed will cut down the interest rate.
C．When the economic growth slows down, the rise of interest rate also slows.
D．The interest rate is utilized to decrease the prices of stocks.