Sally Steps on Her Bathroom Scale, and It Tells Her

Multiple Choice

Sally steps on her bathroom scale, and it tells her that she weighs 145 pounds. When she steps on it again after her shower, she gets the same result. In fact, it has told her that her weight is stable at 145 pounds for several days now. This is very distressing to Sally, because she actually only weighs around 127 pounds. Which of the following could be said about Sally's scale?

A) It is unreliable.
B) It is invalid.
C) It lacks standardization.
D) It has not been properly normed.