What Is the Meaning of the T_i term in This $\operatorname{MIN} \sum \frac{1}{t_{i}}\left(d_{i}^{-}+d_{i}^{+}\right)^{2}$

Multiple Choice

What is the meaning of the t_i term in this objective function for a goal programming problem?
$\operatorname{MIN} \sum \frac{1}{t_{i}}\left(d_{i}^{-}+d_{i}^{+}\right) ^{2}$
$\operatorname{MIN} \sum \frac{1}{t_{i}}\left(d_{i}^{-}+d_{i}^{+}\right) ^{2}$

A) The time required for each decision variable.
B) The percent of goal i met.
C) The coefficient for the i^th decision variable
D) The target value for goal i.