What would happen to the purity, yield, and activity of rGFP if you pooled (i. e. combined) the E2 and E3 fractions and then applied the pooled fractions onto a new Ni+2-agarose column?

Suppose you use three different scale to weigh a bag of organges. one scale says the nag weighs 2.1 lb, and third says it weighs 2.1 lb. the actual weight of the bag of organges is 2.153 lb. which of the following best decribes these results?