The students observed that the test tube water from the grated potato beaker was a dark blue-black color, while the chunked potato water was medium blue. What would be an appropriate hypothesis for the experiment?

A) Mechanical digestion always precedes chemical digestion.
B) If food is chewed first, then mechanical digestion will take place at a much faster rate.
C) The greater the surface area of the food exposed, the faster the rate of chemical digestion.
D) If enzyme action is represented by the iodine color change, then chemical digestion will not take place without mechanical digestion.