Larval form in stool is found in -a) Strongyloidesb) Ancylostoma duodenalec) Ascaris lumbricoidesd) Necator americanuse) Trichura

Strongyloides is ovo-vivparous, hence larva found in stool.  If passed feces is allowed to stand for several hours, the Rhabditiform larvae of Ancylostoma duodenale and Necator americanus will hatch out and even they can be seen while performing stool examination.