Is this equation balanced?

2Zn(OH)2 + 2NaOH → Na2ZnO2 + 2H2O

a
The reaction is balanced because the total number of atoms of each element in the reactants is equal to the total number of atoms of each element in the products, supporting the law of conservation of mass.
b
The equation is not balanced but the total number of atoms of each element in the reactants is equal to the total number of atoms of each element in the products.
c
The equation is balanced because all chemical equations are balanced.
d
The equation is not balanced because the total number of atoms of each element in the reactants is not equal to the total number of atoms of each element in the products.

d

The equation is not balanced because the total number of atoms of each element in the reactants is not equal to the total number of atoms of each element in the products.