Which of the Following Statements Regarding Dieting Is Most Accurate

Which of the following statements regarding dieting is most accurate?

A) We don't have a good estimate of how effective diets are because we rarely see people who are able to effectively diet on their own without assistance.
B) Surprisingly, modern research indicates that about 80 to 85 percent of people on diets are able to effectively maintain their new and desired weights.
C) Modern research supports the adage that "95 percent of people who lose weight will regain it in a year."
D) Contrary to popular beliefs, modern research suggests that only 35 to 45 percent of people on a diet will regain the weight they have lost within a year.