An astronaut carries a bag that has a mass of 12kg on Earth. Which one of the following statements is correct about the bag when he is standing on the Moon (take gmoon=61gearth)?
(a) Mass =12kg; Weight =120N
(b) Mass =2kg; Weight =20N
(c) Mass =12kg; Weight ≈20N
(d) Mass =12kg; Weight =12N