The tail of a comet is directed away from the sun because:

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
Answer & Explanation
Option: [D]

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