This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: General obstetrics, Subject name: Gynaecology & Obstetrics
Indications of medical management In ectopic 
Select and explain. 
A. Presence of fetal hea activity, B. Size <4 cm, C. Gestation <6 weeks, D. a-hCG>1500
B: Size <4 cm
Answer: B: Size <4 cm 
Explanation: Criteria for selection Hemodynamically stable No intrauterine pregnancy on ultrasound No tubal rupture Size of ectopic less than 4 cm If there is foetal cardiac activity use with caution Beta hcg level preferably less than 3000 IU/L (refer pgno:162 sheila 2 nd edition)