56. In what order would you pass through tissues when moving from the pith to the epidermis in a plant possessing secondaryvascular tissue? 
(A) primary phloem  →  primary xylem  →  secondary phloem  →  secondary xylem. 
(B) primary xylem → secondary xylem  → . vascular cambium  →  secondary phloem  →  primary phloem.
(C) primary phloem  →  secondary phloem  →  secondary xylem →  primary xylem. 
(D) secondaryxylem  →  primary xylem  →  primary phloem  →  secondary phloem. 
(E) secondary phloem  →  primary phloem →  primary xylem  → secondary xylem.