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 man developed swelling of face frequently with occassional laryngeal edema, most probable diagnosis is aEUR' 
Select and explain. 
A. C-1 esterase deficiency, B. Allergy, C. Anaphylaxsis, D. Not esterase deficiency
A: C-1 esterase deficiency
Answer: A: C-1 esterase deficiency 
Explanation: C1 esterase deficiency (Ref: Harrison 17"Ve p. 2066; Robbin's 7"'/e p. 66, 671 Repeat from May 10 Q no.111