Evaluate the definite integral. Your answer will be a function of $x$. $\displaystyle{\int_{2}^{x} ({6t+3}) \, dt =}$ The definite integral above (select all that apply)

A. represents the signed area under a parabola for $x > 2$.

B. represents the signed area of a trapezoid for $x > 2$.

C. represents the set of all antiderivatives of $6t+3$.

D. represents the signed area of a triangle for $x > 2$.