On a Human Skull, How Is the Foramen Magnum Positioned

On a human skull, how is the foramen magnum positioned to demonstrate bipedalism?​

A) ​It is opened at an angle so that the spinal cord emerges almost horizontally.
B) ​It is primarily positioned on the right of the skull to indicate right-handedness.
C) ​It is lower and positioned more forward on the skull.
D) ​It is positioned on top of the skull and allows the skull plates to suture together after birth.