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
Worst prognosis is seen in pregnant women with cardiac lesion is : 
Select and explain. 
A. Mitral stenosis, B. Co-arctation of aoa, C. Eisenmenger syndrome, D. Tetralogy of fallot's
C: Eisenmenger syndrome
Answer: C: Eisenmenger syndrome 
Explanation: Eisenmenger syndrome