When an Economy's Resources Are Not Fully Employed,then It Must

When an economy's resources are not fully employed,then it must be true that the:

A) production point is located outside and to the right of the production possibilities frontier.
B) production point is located along the production possibilities frontier.
C) production point is located inside and to the left of the production possibilities frontier.
D) production possibilities frontier shifts to the right.
E) production possibilities frontier shifts to the left.