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: Surgery
A 45 y ears old patient presented to you with ongoing massive hematemesis. The patient is ale and hemodynamically stable. What will be the first step in management? 
Select and explain. 
A. Do an urgent upper GI endoscopy, B. Put the patient in recovery position and secure airway, C. Inse a cannula and sta IV fluids, D. Send for blood transfusion
B: Put the patient in recovery position and secure airway
Answer: B: Put the patient in recovery position and secure airway 
Explanation: Ans: B. Put the patient in recovery position and secure airway(Ref BLS/ACLS Guidelines: resuscitation guidelines /adult- aclvanced-lik-suppo: Harrison 19/e p1768: Bratinwald's 10/e p844-845)BLS algorithm:Sta airway management in any patient who is collapsed/expected to collapse.Patient here is hemodynamically stable.Airway - Most impoant component at risk in this patient & requires immediate attention.Put patient in recovery position.i.e. left lateral decubitus position to prevent the risk of aspiration.