Which of the Following Is Not a Ground for Appeal

Which of the following is not a ground for appeal of a federal death sentence?

A) the death sentence was imposed under the influence of passion, prejudice or any other arbitrary factor
B) the admissible evidence and information adduced does not support the special finding of the existence of the required aggravating factor
C) the proceedings involved a legal error requiring reversal which was properly preserved for appeal under the rules of criminal procedure
D) the finding of two or more mitigating circumstances
E) all of the above are grounds for appeal