A father brought his 15-year-old son to the endocrine clinic because the boy was only 5 ft tall. He wanted his son to receive GH therapy because short stature would be a detriment to his success as an adult. The boy would be considered for this therapy under which of the following circumstances? 

a. If he were against the use of cadaver parts 

b. If his epiphyses were closed 

c. If his GH levels were very low.

d. If he were also diabetic. 

e. If he had chronic renal failure. 

f. If he had hypothyroidism.