Identify the correct statements from the following:
$I-$ Xylem transports only inorganic nutrients.
$II-$ Phloem transports only organic materials.
$III-$ There is an exchange of materials between xylem and phloem.
$IV-$ In xylem,inorganic nitrogen is present along with organic nitrogen in the form of amino acids and other components.
$V-$ Organic phosphorus and sulfur are also found in xylem tissue.

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