A financial analyst constructs a theoretical model to represent the market shares of several similar companies. She then collects data over the next month to evaluate her model. At the end of the month, she finds that for one of the companies, her model differs by 5% from the data. She decides to collect data for an additional two months. If her theoretical model is valid, what could she expect from the total data collected after three months?

A.
The difference between the data and the model will stay the same.
B.
The difference between the data and the model will get larger.
C.
It is impossible to predict how the difference between the data and the model will change.
D.
The difference between the data and the model will get smaller.