A rectangular steel bar supports an axial load of $1500$ $lb$. The bar is $2.74$$"$ wide, $0.25$$"$ high, and $9.0$$"$ long, and has a Young's modulus of $29 \times 10^6$ $psi$. The resulting change in the length of the bar is:

A. $0.00400$ $in$
B. $0.00035$ $in$
C. $0.00123$ $in$
D. $0.00068$ $in$