11.重貼現政策藉由改變下列何者的數量，進而影響貨幣供給以達到政策效果？ (A)超額準備(excess reserves)與準備貨幣(reserve money) (B)借入準備(borrowed reserves)與準備貨幣(reserve money) (C)超額準備(excess reserves)與貨幣乘數(money multiplier) (D)借入準備(borrowed reserves)與貨幣乘數(money multiplier)