Given below are two statements:
Statement (I): How to produce means what level of inputs to apply in production.
Statement (II): The equation $Y = f(X_1, X_2 / X_3, X_4, \dots, X_n)$ indicates that $X_1$ and $X_2$ are fixed factors, while $X_3, X_4, \dots, X_n$ are held variable at their arithmetic mean level.
In light of the above statements, choose the most appropriate answer from the options given below: