The slope of the tangent to a curve $y= f(x)$ at $(x,f(x))$ is $2x+1$. If curve passes through the point $(1,2)$ then the area of the region bounded by the curve the x-axis and the line $x=1$ is

Question

$\begin{array}{1 1} \large\frac{5}{6} \\ \large\frac{6}{5} \\ \large\frac{1}{6} \\ 6 \end{array}$