Assuming all of the following bonds have the same level of risk, which one represents the best investment for an individual with a 20% marginal tax rate? A 6 percent semiannual coupon corporate bond with $1,000 face, 3 years to maturity, selling for $950. O AS percent annual coupon corporate bond with a yield to maturity of 8 percent. O A5 percent annual coupon municipal bond with 4 years to maturity, face value of $1,000, selling for $960. A6 percent semiannual coupon municipal bond with yield to maturity of 6.5 percent