A cart constrained to move along a straight, horizontal one-dimensional track starts from rest at the origin (x = 0\) at \(t = 0\)). The cart experiences a time-dependent acceleration \(a(t)\) as shown in the graph from \(t = 0\) to \(t = 2T\). Which of the following graphs best represents the position \(x\) of the cart as a function of time \(t\) over the interval \(0 \le t \le 2T\)?