Explanation

Xerophytes are plants adapted to dry habitats, so their features all aim at reducing water loss: smaller leaves reduce the transpiring surface, a waxy cuticle seals the leaf, and stomata are sunken in pits to trap humid air. Having a large number of stomata would increase transpiration and defeat this purpose — xerophytes typically have fewer, sunken stomata. Since a large number of stomata is contrary to xerophytic adaptation, it is not a feature of xerophytes. Hence option B is correct.