An electron with initial speed \(v_0\) enters a region at position \(x = 0\) where a uniform electric field \(\vec{E}\) points in the \(+x\)-direction. The electric field exerts a retarding force on the electron, bringing it to rest at position \(x = x_{\text{max}}\). Which of the following graphs best represents the speed \(v\) of the electron as a function of position \(x\) from \(x = 0\) to \(x = x_{\text{max}}\)?