Answer:
c. 4.6%
Step-by-step explanation:
the question is incomplete, since it is missing the average beta for B rated bonds, so I looked for similar questions: average beta for B bonds = 0.26 and since we are assuming a normal economy, we should use it:
the expected return on the bonds = risk free rate + (average beta of B rated bonds x risk premium)
expected return = 3% + (0.26 x 6%)
expected return = 3% + (0.26 x 6%) = 3% + 1.56% = 4.56% ≈ 4.6%