What is the primary difference in the dissociation of HCl and HCN in water?

• A. HCl partially dissociates in water, while HCN completely dissociates.
• B. Neither HCl nor HCN dissociate in water.
• C. Both HCl and HCN completely dissociate in water.
• D. HCl completely dissociates in water, while HCN only partially dissociates.

Answer: (D)