1.5-kg crate falls from a height of 2.0 m onto an industrial spring scale with a spring constant of 1.5 × 10⁵ N/m. At its greatest compression the reading on the scale is:
A. 15N
B. 30N
C. 1.5×10³N
D. 2.1×10³N
E. 3.0×10³N