How is the conditional formation constant calculated for EDTA complexes?

• A. By adding the formation constant to the fraction of EDTA in its basic form.
• B. By subtracting the fraction of EDTA in its basic form from the formation constant.
• C. By dividing the formation constant by the fraction of EDTA in its basic form.
• D. By multiplying the fraction of EDTA in its basic form by the formation constant.

Answer: (D)