The polyatomic nitrate ion (NO3−) is present in both the products and the reactants of the chemical equation shown below.

Ba(NO3)2 + 2LiOH → Ba(OH)2 + 2LiNO3

How many nitrate ions are in the products and the reactants of the chemical equation?
A.
three in the reactants and three in the products
B.
two in the reactants and two in the products
C.
six in the reactants and three in the products
D.
one in the reactants and two in the products