In Light of Dusky V

In light of Dusky v. United States, 1960, which of the following is true of the accepted national standard for competence to stand trial?

A) With major differences across jurisdictions, a standard for competence to stand trial in United States courts is yet to be formulated.
B) The criteria refer to present abilities as well as to the mental state of the defendant at the time of the alleged offense.
C) The Dusky standard specifies how the evaluator assessing competence should judge the sufficiency of rational understanding, ability to consult, or factual understanding.
D) Given the U.S. Supreme Court's decision in Dusky , the requirement that a defendant be competent to stand trial has a Constitutional basis.