What is the Fisher-Weil duration for a $200 000 bond with 36 months to maturity and 10% p.a. coupon, paid semi- annually? Assume that the three consecutive 6-month yields are 5% p.a. per annum, 6% p.a. per annum and 8% p.a. per annum respectively. A) 1.43 years B 1.5 years 3.86 years None of the above