11. The yield rates on Treasury bonds and municipal bonds are 8.5% and 7.25%, respectively. In 2001, US present Bush government passed tax cut to reduce the highest income tax bracket of from 40% to 35%. what was effect of tax cut schedules? (A) Yield rates after tax on Treasury bonds decreased to 5.375%. (B) Yield rates after tax on Treasury bonds decreased to 5.1%. (C) Yield rates on municipal bonds unchanged at 7.25%. (D) Yield rates on municipal bonds decreased to 4.7125%. (E) Yield rates on municipal bonds decreased to 4.35%