28. 某債券之 Macaulay Duration 為 4.68,殖利率為 5%,半年付息一次,其 Modified Duration 為多少?
(A)4.255
(B)4.457
(C)4.566
(D)4.68
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統計: A(3), B(10), C(37), D(4), E(0) #2200369
統計: A(3), B(10), C(37), D(4), E(0) #2200369