When iron is combined with copper (1) nitrate, it produces iron (II) nitrate and
copper. Which of the following could NOT be a mole ratio in this chemical
reaction?

A)1 mole Fe / 2 mole Cu

B)1 mole Fe(NO3)2 / 2 mole Cu

C)2 mole Cu(NO3)2 / 2 mole Fe

D)1 mole Fe(NO3)2 / 1 mole Fe