A simple balance has two pans suspended from the ends of arms of equal length. When it is balanced, the pointer is at 0. pan X pivot arm 0 pointer pan Y Four masses (in total) are placed on the pans, with one or more on pan X and the rest on pan Y. Which combination of masses can be used to balance the pans?
A 1 g, 1 g, 5g, 10g
B 1 g, 2g, 2g, 5g
C 2g, 5g, 5g, 10 g
D 2 g, 5 g, 10 g, 10g​