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: Medicine
Which of the following hormones is elevated in small cell carcinoma of lung 
Select and explain. 
A. PTH, B. ANF, C. Growth hormone, D. VIP
B: ANF
Answer: B: ANF 
Explanation: Hormones produced by small - cell cancer lung are :

ACTH.
AVP.
Calcitonin.
Gastrin releasing peptide.