Work the Exercise $R(x)$ (In Thousands of Dollars) If the Marginal Revenue (In Thousands

Multiple Choice

Work the exercise.
-Find the total revenue function $R(x)$ (in thousands of dollars) if the marginal revenue (in thousands of dollars per unit) at a production level of $x$ units is $R^{\prime}=\frac{49 x+3}{e^{x}}(0 \leq x \leq 7)$ , and $R(0) =0$ .

A) $R(x) =49 x e^{-x}-10 e^{-x}-52$
B) $R(x) =49 x e^{-x}+52 e^{-x}-49$
C) $R(x) =-49 x e^{-x}+52 e^{-x}+49$
D) $R(x) =-49 x e^{-x}-52 e^{-x}+52$