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
This test is positive in which condition: 
Select and explain. 
A. MND, B. Pernicious anaemia, C. Parkinsonism, D. Lateral Medullary syndrome
B: Pernicious anaemia
Answer: B: Pernicious anaemia 
Explanation: Ans. B. Pernicious anaemiaa. The image shows Rhomberg's testb. Patient is told to stand on his/her feet interposed.c. Eyes are held closed.d. Clinician looks for any swaying movement if it occurs for 1 minute.e. This test shows integrity of posterior column proprioceptive pathway (sensory ataxia).f. This becomes positive in -i. Vitamin Deficiencies E.g. Vit. B12ii. Tabes Dorsalis (Neuro syphilis)iii. Demyelinating Polyneuropathyiv. Friedrich's Ataxiav. Meniere's Disease