This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Urology, Subject name: Surgery
Which of the following is not true about testicular tumor? 
Select and explain. 
A. About 95% are embryonal tumors, B. 10% are bilateral, C. Pulmonary metastases suggest that the tumor is teratoma, D. Lymphatic spread is to retroperitoneal and intrathoracic lymph nodes
A: About 95% are embryonal tumors
Answer: A: About 95% are embryonal tumors 
Explanation: About 95% of testicular tumours are Germ cell tumours. Embryonal carcinoma is a type of non seminomatous germ cell tumour. Pure embryonal carcinoma constitutes 30% of germ cell tumours but areas of embryonal carcinoma are present in about 40% of germ cell tumours. Teratomas spreads mainly through blood ( to lungs, liver, brain etc) , less commonly through lymphatics.Lymphatic spread occurs to retroperitoneal, para-aoic, mediastinal and left supraclavicular nodes.Reference : page 1083 SRB's manual of surgery 5th edition and page 708 textbook of pathology Harshmohan 6th edition