Tensile Stress and Strain: the Graph in the Figure Shows

Multiple Choice

Tensile stress and strain: The graph in the figure shows the force on an object as a function of the elongation caused by that force. Which statement about this object is true?

A) The object obeys Hooke's law at all points from A to C.
B) The object obeys Hooke's law at all points from B to C.
C) The object obeys Hooke's law at all points from A to B.
D) The elastic limit occurs at point C.
E) The region of elastic behavior occurs from B to C.