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
26 years old lady with H/o recurrent abortion which of the following investigations you will do to confirm the diagnosis ? 
Select and explain. 
A. PT, B. BT, C. Anti Russel viper venom antibodies, D. Clot solubility test
C: Anti Russel viper venom antibodies
Answer: C: Anti Russel viper venom antibodies 
Explanation: None