Does Alice Have the Right to Know Bill's Name and Arrest

Does Alice have the right to know Bill's name and arrest record

A) Alice has a constitutional right to the name of the informant only if it is crucial to her defense.
B) Alice has a constitutional right to all information that the police have about Bill.
C) Alice has no constitutional right to information about Bill because she saw him purchase drugs and should be able to identify him.
D) Alice has no constitutional right to information about Bill because she has a public defender who has investigators who work on her cases.