This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: C.N.S, Subject name: Medicine
The most common physical sign of cerebral metastasis 
Select and explain. 
A. Epilepsy, B. Focal neurological deficit, C. Papilloedema, D. Visual defects
B: Focal neurological deficit
Answer: B: Focal neurological deficit 
Explanation: *in brain metastases,presentation is with headaches(40-50%),focal neurological deficit(20-40%),coognitive dysfunction(35%),seizures(10-20%) and papilledema(<10%). A focal neurologic deficit is a problem with nerve, spinal cord, or brain function. It affects a specific location, such as the left side of the face, right arm, or even a small area such as the tongue. Speech, vision, and hearing problems are also considered focal neurological deficits Ref Harrison20th edition pg 2764