A flat wire loop of fixed area \(A\) is placed in a uniform magnetic field directed perpendicular to the plane of the loop. The magnitude of the magnetic field decreases over time according to \(B(t) = B_0 \left(1 - \dfrac{t}{t_0}\right)^2\) for \(0 \le t \le t_0\), where \(B_0\) and \(t_0\) are positive constants. Which of the following best describes the graph of the magnitude of the induced electromotive force \(\mathcal{E}\) in the loop as a function of time \(t\) for \(0 \le t \le t_0\)?