Teacher divides her class into groups and assigns each group the task of measuring the mass of the same object three times. The teacher already knows that the mass of the object is 25 g.
Based on the results each group records, which group makes the most precise measurements of the object?
A.
Group A: 28.5 g, 28.4 g, 28.5 g
B.
Group B: 25.5 g, 25.0 g, 24.8 g
C.
Group C: 32.1 g, 35.0 g, 25.0 g
D.
Group D: 20.0 g, 25.0 g, 30.0 g