A baking scale measures mass to the tenth of a gram, up to 650 grams. A cup of flour is placed on the scale and results in a measure of 121.8 grams. Which of the following statements is not true? a. The exact mass of the cup of flour must be between 121.7 and 121.9 grams.
b. The cup of flour has a mass of exactly 121.8 grams.
c. Given the limitations of the scale, the measurement has an appropriate level of accuracy.
d. To the nearest gram, the cup of flour has a mass of 122 grams.