Each of the numbered items contains two or more sentences followed by three options for combining them using coordination or subordination. Select the combination that makes the best sense.
A. People with anorexia nervosa may refuse to eat.
B. People with bulimia nervosa may go on an eating binge and then induce vomiting.
C. If people with anorexia nervosa refuse to eat, people with bulimia nervosa may go on an eating binge and then induce vomiting.
D. People with anorexia nervosa may refuse to eat, whereas people with bulimia nervosa may go on an eating binge and then induce vomiting.
E. People with anorexia nervosa may refuse to eat because people with bulimia nervosa may go on an eating binge and then induce vomiting.