Which expression correctly represents alpha_m for a complexation titration as a function of L when it is described by a polynomial series in L?

Which expression correctly represents alpha_m for a complexation titration as a function of L when it is described by a polynomial series in L?

• A. 1/(1+B1L+B2L^2+B3L^3+...)
• B. 1/(1+L+B2L^2+B3L^3+L^4)
• C. 1+ B1L + B2L^2 + B3L^3 + ...
• D. B1L + B2L^2 + B3L^3 + ...

Answer: (A)