A
the tail of the comet always exists in the same orientation.
B
as the comet rotates around the sun, the lighter mass of the comet is pushed away due to the centrifugal force alone.
C
as the comet rotates, the lighter mass of the comet is attracted by some stars situated in the direction of its tail.
D
the radiation emitted by the sun exerts a radial pressure on the comet throwing its tail away from the sun
