Answer:
The correct answer is 8% annual rate of interest on the bonds.
Explanation:
The effective annual interest rate is 8%
Effective rate if interest (semi-annual) = (Effective interest / Outstanding Balance) x 100
Effective rate if interest (semi-annual) = (345,639 / 8,640,967) x 100
Effective rate if interest (semi-annual) = 0.04 x 100
Effective rate if interest (semi-annual) = 4%
The Effective Annual Rate of Interest = 4% x 2 = 8%