Several processes are involved in the making of bone china, but the ingredients that set it apart from fine china is the component of bone ash that is included in its manufacture.

• A. but the ingredients that set it apart from fine china is the component of bone ash
• B. but the ingredient that sets it apart from fine china is the component of bone ash
• C. but the ingredient that put apart from fine china is the component of bone ash
• D. although the ingredient that sets it apart from fine china is the component of one ash