2. A student is visiting his grandmother's house and notices that she has lactose-free milk in her refrigerator. He does some research on lactose-free milk and finds out that it is just milk that contains the lactase enzyme. He hypothesizes that the lactase causes the milk to undergo a chemical reaction in order to make it lactose-free, Which of the following observations best supports the student's hypothesis? Saved. A. The lactose-free milk smells about the same as regular milk. B. The lactose-free milk has a different taste from regular milk. C. The lactose-free milk appears to be the same color as regular milk D. The lactose-free milk has a shorter expiration date than regular milk​