$A$ transverse section of a plant part shows the following characteristics:
$(a)$ Numerous,scattered vascular bundles,each surrounded by a bundle sheath.
$(b)$ $A$ large,conspicuous parenchymatous ground tissue.
$(c)$ Conjoint and closed vascular bundles.
$(d)$ Absence of phloem parenchyma.
Identify the type of plant and the part:

• A
  Monocot stem
• B
  Monocot root
• C
  Dicot stem
• D
  Dicot root