This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: All India exam, Subject name: Pharmacology
A 23-year old patient diagnosed with stage IA malignant ovarian germ cell tumour. Which of the following would be the standard treatment? NOT RELATED- GYN 
Select and explain. 
A. Unilateral oophorectomy, B. Bilateral oophorectomy and hysterectomy, C. Unilateral oophorectomy followed by chemotherapy, D. Ovarian biopsy followed by chemotherapy
C: Unilateral oophorectomy followed by chemotherapy
Answer: C: Unilateral oophorectomy followed by chemotherapy 
Explanation: Unilateral oophorectomy followed by chemotherapy