Use the table for the question below. Consider the following yields to maturity on various one-year zero-coupon securities: Security Yield (%) Treasury 4.6 AAA corporate 4.8 BBB corporate 5.6 B Corporate 6.2 Q. The credit spread of the BBB corporate bond is closest to: 1 1.0%. 2 5.6%. 3 1.6%. 4 0.8%