A rigid rectangular wire loop of width \(w\) and length \(L\) moves to the right with a constant speed \(v\) along a straight horizontal path. The loop enters, fully passes through, and exits a region of width \(W\) (where \(W > L\)) containing a uniform magnetic field of magnitude \(B\) directed perpendicularly into the page. Which of the following graphs best represents the magnetic flux \(\Phi_B\) through the loop as a function of time \(t\) during this motion?