The federal estate tax rate OA) is a progressive tax with the highest marginal rate at 55 percent. O B) is a flat tax of 40 percent on the gross estate. O C) has increased in the past 20 years. D) is assessed only on the amount of an estate that exceeds the exemption amount.

The federal estate tax rate A) is a progressive tax with the highest marginal rate at 55 percent. B) is a flat tax of 40 percent on the gross estate. C) has increased in the past 20 years. D) is assessed only on the amount of an estate that exceeds the exemption amount