Three parcels weigh 2 pounds. Two parcels weigh the same. The lightest weight is 5/8 pound lighter than the heaviest weight. How much do each of the parcels weigh?

A: 1/8, 1/8, 3/4
B: 1/4, 1/4, 3/2
C: 5/8, 5/8, 3/4
D: 7/8, 7/8, 1/4