Which of the following statement(s) is/are not correct?
  1. Cork cambium is also called phellogen.
  2. Cork is also called phellem.
  3. Secondary cortex is also called periderm.
  4. Cork cambium, cork and secondary cortex are collectively called phelloderm.

A. (iii) and (iv)

B. (i) and (ii)

C. (ii) and (iii)

D. (ii) and (iv)

Please do not use chat terms. Example: avoid using "grt" instead of "great".