Which One of the Following Cannot Be a Definition of an Elastic

Multiple Choice

Which one of the following cannot be a definition of an elastic modulus?

A) $-V_{i} \frac{\Delta P}{\Delta V}$
B) $\frac{F h}{A \Delta x}$
C) $\frac{F L_{i}}{A \triangle L}$
D) $V_{i} \frac{\Delta V}{\Delta P}$
E) $\frac{\text { stress }}{\text { strain }}$