Where Are the Youngest Wood and the Youngest Bark in a Tree

Multiple Choice

Where are the youngest wood and the youngest bark in a tree trunk?

A) The youngest wood is in the center of a tree;the youngest bark is the outside of the bark.
B) The youngest wood is in the center of a tree;the youngest bark is the inner part,next to the vascular cambium.
C) The youngest wood is toward the outside,near the vascular cambium;youngest bark is the outside of the bark.
D) The youngest wood is toward the outside,near the vascular cambium;youngest bark is the inner part,next to the vascular cambium.