A spring balance shows a reading of 50N when an object is weighed on Earth. The same object is then taken to the Moon along with a beam balance. Which set of readings is MOST likely when the object is weighed on the Moon?
(a) Beam balance: 5.1kg ; Spring balance: 50N
(b) Beam balance: 0.85kg ; Spring balance: 8.3N
(c) Beam balance: 5.1kg ; Spring balance: 8.3N
(d) Beam balance: 50N ; Spring balance: 5.1kg