Which of the following statements about bile in the digestive system are correct?
1 It emulsifies fat globules.
2 It dilutes the contents of the small intestine.
3 It lowers the activation energy of lipase.
4 It helps to reduce the acidity of the contents leaving the stomach.
1. 1, 2 and 3 only
2. 1, 2 and 4 only
3. 1 and 2 only
4. 2 and 3 only