Use the graph of the function g shown to estimate the function value $g(1\mathrm{.}8).$

Find the function value.

Select the correct choice below and, if necessary, fill in the answer box to complete your choice.

A$.g(1\mathrm{.}8)=($Type an integer.$)$

B$.$ The function is not defined at $x=1\mathrm{.}8.$