<prompt> A 8 years old child is preceniting with perianal itching. Perianal scrabbingswab is showing following bile non-stained eggs. The causative parasite is-AscarisStrongyloidesEnterobiusTrichoris  <response>: Ans. is c i.e., Enterobius Perianal pruritis with planoconvex bile non-stained eggs are characteristic of enterosius vermicularis. 