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: Physiology
An anterolateral (ventrolateral) corodotomy relieving pain in right leg is effective because it interrupts the: 
Select and explain. 
A. Left dorsal column, B. Left ventral spinothalmic tract, C. Left lateral spinothalmic tract, D. Right lateral spinothalmic tract
C: Left lateral spinothalmic tract
Answer: C: Left lateral spinothalmic tract 
Explanation: C i.e. Left lateral spinothalamic tract