The correct option is B Parenchyma
Bryophytes are composed of true parenchyma derived from three-dimensional growth usually from an apical meristem. Stems in mosses are multicellular and can show a surprising amount of tissue differentiation depending on the species of moss. Typically, most mosses have cortical cells (also called parenchyma cells) that compose much of the stem, and thick walled cells, for structural support.