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: Pathology
Bell's Palsy is characterized by 
Select and explain. 
A. Bilateral involvement of the side of the face, B. Inability to whistle, C. No loss of muscular control, D. Closing of the eyes
B: Inability to whistle
Answer: B: Inability to whistle 
Explanation: Bell's palsy is an abrupt, unilateral, peripheral facial nerve paralysis. It is characterized by drooping of the corners of the mouth, watering of the eye, inability to close or wink the eye, absence of forehead wrinkles on the affected side, mask like expression less face, inability to whistle.