A flat circular loop of wire with area \(A\) rotates at a constant angular speed \(\omega\) in a region of uniform magnetic field \(\vec{B}\). The angle between the magnetic field vector and the normal vector to the loop's plane is given by \(\theta(t) = \omega t\). At the instant when the magnitude of the induced electromotive force (EMF) in the loop is at its maximum, which choice correctly pairs the magnetic flux \(\Phi_B\) through the loop with the angle \(\theta\)?