A 1000-mL sample of acetone, a common solvent used to remove paint, is placed in a small bottle whose mass is 38.0015 g. When weighing the bottle filled with acetone, the following values were obtained: 38.7798 g, 38.7795 g and 38.7801 g. How would you characterize the accuracy of those measurements if the actual mass of acetone was 0.7991g?

a) All measurements made are exact

b) None of the measurements made are exact.

c) Only two of the measurements made are exact

d) Only one of the measurements made is accurate