This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: None, Subject name: Radiology
Most common hormone deficiency seen after intracranial radiation therapy – 
Select and explain. 
A. Prolactin, B. Gonadotropins, C. ACTH, D. Growth hormone
D: Growth hormone
Answer: D: Growth hormone 
Explanation: Growth hormone deficiency is a most common endocrinal complication of intracranial radiotherapy.