The tail of a comet is obtuse from the Sun because -

• A. As the comet revolves around the Sun, its lighter mass gets eroded away only due to the centrifugal force.
• B. As the comet rotates, its lighter mass is attracted by a star located in the direction of its tail.
• C. The radiation emitted by the Sun exerts radial pressure on the comet, causing its tail to drift away from the Sun.
• D. The tail of a comet is always in the same orientation.