Transverse section through stem of a plant shows following features :
(i) Presence of phloem parenchyma
(ii) Absence of bundle sheath
(iii) Wedge shaped vascular bundles
(iv) Presence of medullary rays
The stem belongs to
(a) sunflower
(b) Asparagus
(c) Zea mays

• A

  a only

• B

  a and b only

• C

  b and c only

• D

  a, b and c