What Was Freud's Reason for Practicing Primarily Psychiatry

What was Freud's reason for practicing primarily psychiatry?

A) There was a significant need for better psychiatric care in his community.
B) There were limited opportunities for medical practice and research for Jewish physicians therefore he made the change to support his family.
C) He preferred the practice of psychiatry over medicine.
D) He wanted to develop a new way of understanding psychiatry.