The figure shows a parallel plate capacitor being charged by a battery. If \(X\) and \(Y\) are two closed curves then during charging, \(\oint \vec{B}.d\vec{l}\) is zero along the curve:
1. \(X\) only
2. \(Y\) only
3. Both \(X\) & \(Y\)
4. Neither \(X\) nor \(Y\)