Which of the following are characteristics of cells in the meristematic region?
$I-$ Cells divide continuously.
$II-$ Cells are rich in protoplasm.
$III-$ Cells possess a large,conspicuous nucleus.
$IV-$ All cells of meristematic tissue are differentiated.
$V-$ Cell walls are primary,thin,and cellulosic with abundant plasmodesmata.

• A
  $II, III, IV, V$
• B
  $I, II, III, IV, V$
• C
  $II, III, V$
• D
  $I, II, III, V$