Which of the following features differentiates a dicot stem from a monocot stem?. A. The presence of a distinct pith and cortex in a monocot stem and an undifferentiated ground tissue in dicot stem. B.The presence of a distinct pith and cortex in a dicot stem and an undifferentiated ground tissue monocot stem. C.The presence ofconjoined vascular bundles in a dicot stem and Radial vascular bundles in a monocot stem