What Causes the Pair of Tidal Bulges

What causes the pair of tidal bulges?

A) One is caused by the pull of the moon, the other by the sun.
B) The east and west shores of the Americas pushing the water out of the way like giant mixer blades.
C) The larger one closest to the Moon is gravitational; 180° away it is inertial.
D) The shape of the whole Earth gets deformed into a flattened ellipsoid by the Moon's gravity; the other bulge is due to centrifugal force bending the rocks back but delayed by a quarter revolution.

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