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: Medicine
Bilateral loss of tendon jerk and extensor plantar response is seen in 
Select and explain. 
A. Amyotrophic lateral sclerosis, B. Freidrich's ataxia, C. Tabes dorsalis, D. Lead poisoning
B: Freidrich's ataxia
Answer: B: Freidrich's ataxia 
Explanation: None