1.

Consider the general discretized equation given by aP P+ F~NB(P)aF F =0. According to the zero sum rule, which of these is correct?

A. <sub>F~NB(P)</sub> ( frac{a_F}{a_P} ) =
B. <sub>F~NB(P)</sub> ( frac{a_F}{a_P} ) = 1
C. <sub>F~NB(P)</sub> ( frac{a_F}{a_P} ) = -1
D. <sub>F~NB(P)</sub> ( frac{a_F}{a_P} ) = -
Answer» D. <sub>F~NB(P)</sub> ( frac{a_F}{a_P} ) = -


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