Which of the Following Is True of Mesmer's Medical Dissertation,which

Which of the following is true of Mesmer's medical dissertation,which he wrote years before his first documented magnetic cures?

A) It spelled out the essential details of his theory of animal magnetism.
B) It emphasized the importance of the contagion effect in groups of people.
C) It asserted that the planets and stars directly influence people through the effect of "animal gravitation."
D) It concerned the anatomy of the brain.