This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Immunology, Subject name: Microbiology
Most common site of angioedema: 
Select and explain. 
A. Hands, B. Lips, C. 3rd week, D. Eyelid
B: Lips
Answer: B: Lips 
Explanation: Ans. B. Lipsa. Angioedema is the swelling of deep dermis, subcutaneous, or submucosal tissue due to vascular leakage.b. Acute episodes often involve the lip, eyes, and face; however, angioedema may affect other parts of body, including respiratory and gastrointestinal (GI) mucosa.c. Most common site of angioedema: LIPS > Tongued. Laryngeal swelling can be life-threatening.