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: Gynaecology & Obstetrics
Gonadotrophin is a : 
Select and explain. 
A. Steroid, B. Lipoprotien, C. Polypeptide, D. Glycoprotien
D: Glycoprotien
Answer: D: Glycoprotien 
Explanation: Glycoprotien