Astronauts Mr.X and Mr.Y float in a zero gravity space with no relative velocity to one another. Mr. Y throws a mass of 5 kg towards X with speed 2 m/s. If Mr. X catches it, the change in velocity of X and Y are (choose the correct option)

(a) 0.21 m/s, 0.80 m/s

(b) 0.80 m/s, 0.21m/s

(c) 0.12 m/s, 0.08 m/s

(d) 0.08 m/s, 0.12 m/s

Please provide me the solution part step by step