Which of the Following Statements If Not Correct

Which of the following statements if not correct?

A) The cells involved in the transport of organic materials in the phloem are the sieve tube members.
B) The column of connected sieve tube members is called the sieve tube.
C) Adjoining each sieve tube member is a companion cell with a large nucleus that "controls" the adjacent sieve tube member through numerous plasmodesmata.
D) In monocots,xylem and phloem are found in a ring at the periphery of the stem.
E) Springwood has cells that are noticeably larger than those of summerwood.