All of the Following Characterize the Flexner Era in Medical

All of the following characterize the Flexner era in medical education, except:

A) medical schools developed a relatively standardized four-year curriculum.
B) the medical school curriculum was divided into basic sciences during the first two years and clinical experiences during the third and fourth years.
C) prevention and public health were important components of the curriculum.
D) hospital rotations in specialty areas were the focus of the clinical experience.