46.若債券折價發行時，下列利率之排序何者正確？ (A)票面利率(coupon rate)＞當期收益率(current yield)＞到期收益率(yield of maturity) (B)到期收益率(yield of maturity)＞當期收益率(current yield)＞票面利率(coupon rate) (C)當期收益率(current yield)＞票面利率(coupon rate)＞到期收益率(yield of maturity) (D)到期收益率(yield of maturity)＞票面利率(coupon rate)＞當期收益率(current yield)