What is the relationship.between calcium and magnesium ions in hard water and the effectiveness of soap?
A. Soap repels these ions, creating very foamy lather.
B. Soap traps these ions in micelles, preventing foamy lather.
C. Soap reacts with these ions first, preventing foamy lather.
D. Soap reacts with these ions last, creating very foamy lather.
E. Soap reacts with these ions, creating a low pH which prevents foamy lather.