An issue of 9.60% senior debentures matures on December 15, 2029 and currently trade at 104.65 Interest is paid semi-annually and December 15 is a coupon anniversary date. [Assume today is December 15, 2020 so term to maturity is 9 years.] The debentures are callable on or at any time thereafter on the dates shown on the schedule below for the prices shown on the schedule. First call is 4 years away.

December 15, 2020-2023 2024 2025 2026 2027 2028

Call Price No Call 104% 103% 102% 101% 100.5%

30. The Duration of the bonds if held to maturity is:

1. 5.5 years
2. 6.0 years
3. 6.3 years
4. 6.6 years
5. 11.6 years