The Framingham Osteoporosis Study is a famous study which tracked 1125 men and 1413 women starting in 1971 and continuing through 1995. Every four years, participants returned to their doctor to answer a questionnaire about their lifestyle and habits as well as to have an examination. Doctors recorded multiple variables about each individual including: Gender, Age, Weight, Change in Weight Since Last Check-in, Height, Tobacco Use (yes/no), Alcohol Use (yes/no), Caffeine Use (yes/no), Vitamin D levels, and Bone Mineral Density.

Which of the following terms best describes what type of study was done in the Framingham Osteoporosis Study?

A.Case Control (Retrospective) Study

B.Cohort Study

C.Cross-Sectional Study

D.None of these are correct