The functions of xylem are
I. Conduction of water from roots to aerial parts    
II. Transport of minerals absorbed by roots to aerial parts.
III. Providing mechanical support.
IV. Storage of food materials mainly in the form of starch and fat.

• A

  I, II and III   

• B

  II, III, IV    

• C

  I and II only   

• D

  I, II, III, IV