A rod of uniform cross-section A and length L is deformed by $$\delta$$, when subjected to a normal force P. The Young’s Modulus E of the material is,

A

$$E = \frac {P. \delta}{A.L}$$

B

$$E = \frac {A. \delta}{P.L}$$

C

$$E = \frac {P. L}{A.\delta}$$

D

$$E = \frac {A. L}{P.\delta}$$