Which of the Following Statements Relative to an Exercise Program

Which of the following statements relative to an exercise program for weight maintenance or loss is true?

A) the mode of exercise should involve large muscle groups that are activated in rhythmic, continuous type movement.
B) the higher the intensity of aerobic exercise that the individual can sustain, the better, because the greater the intensity the greater the number of Calories burned per minute.
C) the greater the duration of activity, the better.
D) the more frequent the exercise during the week, the better.
E) all of the above statements are true.