A Study of Probable Cause Determinations by Magistrates, Conducted by Professor

A study of probable cause determinations by magistrates, conducted by Professor Abraham Goldstein, found that:
I. most magistrates devote very little time to appraising the affidavit's sufficiency.
II. the police often engaged in "magistrate shopping."
III. magistrates never called witnesses other than the police officer seeking the
Warrant.
IV. magistrates often asked officers questions about the information presented in the warrant application and affidavit.

A) I, II, III
B) I, II, III, IV
C) IV
D) II