Correct Option: B

Mars is know as Red planet. Mars is the fourth planet from the Sun and the second smallest planet in the Solar System. Named after the Roman God of War, it is often described as the "Red Planet" because the iron oxide prevalent on its surface gives it a reddish appearance . Mars is a terrestrial planet with a thin atmosphere, having surface features reminiscent both of the impact craters of the Moon and the volcanoes, valleys, deserts, and polar ice caps of Earth .