This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: All India exam, Subject name: Pharmacology
(NOT RELATED)"Filariform larvae" are seen with? 
Select and explain. 
A. Enterobius vermicularis, B. Ascaris lumbricoides, C. Necator americanus, D. Trichuris trichiura
B: Ascaris lumbricoides
Answer: B: Ascaris lumbricoides 
Explanation: Is infective third-stage larva of the hookworm, Ascaris, and other nematodes with penetrating larvae or with larvae that migrate through the body to reach the intestine.