Manjeet wants to wash clothes, but the water available is hard. He compares the action of soap and detergent in hard water, to decide which one to use for washing his clothes. He observes:

• Soap forms scum in hard water.
• Detergent produces lather easily in hard water.

Which of the following inferences is correct?

A. \(Ca^{2+}\) and \(Mg^{2+}\) ions react with soap, forming insoluble compounds, whereas detergents do not form such insoluble salts.

B. Soap is acidic, and detergents are basic.

C. Soap react with \(Na^+\) ions in hard water to form scum while detergents do not react with \(Na^+\) ions.

D. Detergents form lather easily because they are ionic compounds and react with \(Ca^{2+}\) and \(Mg^{2+}\) ions while soaps do ot react with hard water.