The Rationale for Excluding Evidence Obtained in Violation of the Constitution

The rationale for excluding evidence obtained in violation of the Constitution is that:

A) such evidence is not relevant or material.
B) if such evidence would not be excluded, that fact would provide an incentive for police to affirmatively commit violations of individual constitutional rights.
C) a jury would place little weight on such evidence because force was used in obtaining it.
D) the Constitution of the United States expressly prohibits the use of such evidence.