This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: miscellaneous, Subject name: Pathology
Marker for ovarian carcinoma in serum is 
Select and explain. 
A. CA-125, B. Fibronectin, C. Acid Phosphatase, D. PSA
A: CA-125
Answer: A: CA-125 
Explanation: TABLE 8.14: Impoant Tumour Markers. CANCER ASSOCIATED PROTEINS: i. CA-125:-Ovary ii. CA 15-3 :-Breast iii. CA 19-9 :-Colon, pancreas, breast iv. CD30 :-Hodgkin's disease, anaplastic large cell lymphoma (ALCL) v. CD25 :-Hairy cell leukaemia (HCL), adult T cell leukaemia lymphoma (ATLL) vi. Monoclonal immunoglobulins :-Multiple myeloma, other gammopathies vii. Prostate specific antigen (PSA) :-Prostate carcinoma HARSH MOHAN Textbook of pathology 6th edition pg no 234