In the \(xy\)-plane, two fixed positive charges produce an electric potential distribution represented by a set of equipotential contours, where the potential difference between adjacent contours is constant at \(\Delta V = 10\text{ V}\). At point \(P\), the local equipotential contour is parallel to the \(y\)-axis, the potential decreases in the \(-x\)-direction, and the perpendicular spacing to the next contour is \(1.0\text{ cm}\). At point \(Q\), the local equipotential contour is parallel to the \(x\)-axis, the potential decreases in the \(+y\)-direction, and the perpendicular spacing to the next contour is \(2.0\text{ cm}\). Which of the following diagrams best represents the directions and relative magnitudes of the electric field vectors \(\vec{E}_P\) and \(\vec{E}_Q\) at points \(P\) and \(Q\)?