Which of the Following Statements Is TRUE

Which of the following statements is TRUE?

A) Obesity and unhealthy lifestyle habits are the most critical public health problems we face in the 21st century.
B) Excessive body weight and physical inactivity are the leading cause of preventable death in the United States.
C) Obesity and unhealthy lifestyle affect all ethnic groups, all age groups, and both sexes equally in the United States.
D) Evidence indicates that health risks associated with increased body weight start at a body mass index over 30.