Which best describes plant classification?

If the question goes like this: Which best describes plant classification?
A.      Nonvascular plants are grouped into seedless and seeded plants.
B.       Seedless plants are grouped into gymnosperms and angiosperms.
C.      Gymnosperms are grouped into monocots and dicots.
D.       Angiosperms are grouped into monocots and dicots.  

The best answer will be letter D. Angiosperms are grouped into monocots and dicots.     Botanists grouped or classified together according to its characteristics.

see attached file for more information about classification of plants.