In the notation "s(x) = ...," what does "s(x)" represent?

A. 

There is not enough information to answer this question.

B. 

The value found when s is multiplied by the value x.

C. 

The value of x depends on the value of s(x), since x is a function of s.

D. 

The value of s(x) depends on the value of x, since s is a function of x.

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