A stationary projectile of mass \(4m\) located at the origin of an \(xy\)-coordinate plane detonates and splits into four identical fragments, each of mass \(m\). Immediately following the detonation, the four fragments travel outward in the \(xy\)-plane with equal speeds \(v\): fragment 1 moves at an angle of \(45^\circ\) above the \(+x\)-axis, fragment 2 moves at \(45^\circ\) above the \(-x\)-axis, fragment 3 moves at \(45^\circ\) below the \(-x\)-axis, and fragment 4 moves at \(45^\circ\) below the \(+x\)-axis. Which of the following vector diagrams best represents the individual momentum vectors \(\vec{p}_1\) and \(\vec{p}_2\) of fragments 1 and 2, and the net impulse \(\vec{J}\) exerted on the two-fragment system consisting of fragments 1 and 2 during the detonation?