A stepped shaft ABC has a circular cross$-$section and is attached to a rigid wall on its left side. Two forces are applied in the directions as shown. $F_1=2kN$ and $F_2=7kN.$ All dimensions are in mm $.$ The deformation $(mm)$ of section AB is closest to which of the following values? The elastic modulus, $E=40$GPa.

$-0\mathrm{.}035$

$0\mathrm{.}014$

$-0\mathrm{.}198$

$0\mathrm{.}057$

$-0\mathrm{.}050$