The yield to maturity (YTM) on 1-year zero-coupon bond is 5% and the YTM on 2-year zeros is 6%. The yield to maturity on 2-year maturity coupon bonds with coupon rates of 12% (paid annually) is 5.8%. What arbitrage opportunity is available for a fixed income trader? What is the profit of this activity? Please explain your strategy and your trading activity.