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: Microbiology
Which among the following doesn't enter human body skin? 
Select and explain. 
A. Ancyclostoma, B. Strongyloides, C. Trichinella, D. Necator
C: Trichinella
Answer: C: Trichinella 
Explanation: Trichinella REF: Jawetz, Melnick, & Adelberg's Medical Microbiology, 24T" edition chapter 46 Table 46-4 Indirect repeat in December 2011, See APPENDIX-74 for "DISEASES DUE TO HELMINTHS" "Trichinella infectes by ingestion of undercooked pork which contains encysted larvae in the straited muscle" Skin penetration is seen in: Hookworms; Ancylostoma duodenale, Necator americanus Strongyloides Schistosoma (Cercariae larvae)