At the Conclusion of the Crum and Langer Hotel Experiment

At the conclusion of the Crum and Langer hotel experiment:

A) the "informed" participants were given free memberships in the hotel's fitness club.
B) it was explained to all participants that the results of the experiment were conclusive; daily doses of ginkgo biloba were beneficial to health and well-being.
C) the "uninformed" participants were given free memberships in the hotel's fitness club.
D) all participants were debriefed, and were told about the actual hypothesis, and the purpose of the experiment was explained to them.