Give an introduction of a standing long jump description that includes joint actions and the purpose of the phase.
A) The standing long jump involves bending the knees and hips, swinging the arms, and jumping forward.
B) The standing long jump requires raising the arms above the head and jumping upward.
C) The standing long jump focuses on flexing the elbows and shoulders for maximum height.
D) The standing long jump involves keeping the body rigid and jumping backward.