As an Extension to His Original Experiment on Hindsight Bias,David

As an extension to his original experiment on hindsight bias,David Rosenhan (1973) told some staff members that in the next three months one or more pseudopatients would seek admission to the hospitals.After the three months,when the staff was asked to guess which of the 193 patients admitted during that time were really pseudopatients,

A) all 193 patients were believed to be pseudopatients.
B) 41 were believed by at least one staff member to be pseudopatients.
C) 20 percent of the patients were believed to be pseudopatients.
D) 50 percent of the patients were believed by at least one staff member to be pseudopatients.