单选题 The table below summarizes the yields and corresponding price for a hypothetical 15 -year option-free bond that is initially priced to sell at 7% yield:
Yield (%) Price ($)
6.90% 100.925
47.00 % 100.0000
7.10% 99.0861
Using a 10 basis point rate shock, the effective duration for this bond closest to:

• A. 4.6 years.
• B. 7.5 years.
• C. 9.2 years.