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
Choriocarcinoma commonly metastasize to:
a.Brain
b. Lung
c. Vagina
d. Ovary
e. Cervix 
Select and explain. 
A. ab, B. bc, C. cd, D. de
B: bc
Answer: B: bc 
Explanation: Most common sites of metastases in choriocarcinoma are:
Lung (80%) > Vagina (30%) > Pelvis (20%) > Liver (10%) and Brain (10%)