What mass of sodium hydroxide, NaOH (m.m. = 40 g/mol), would be required to produce 16 g of the antacid milk of magnesia [magnesium hydroxide, Mg(OH)₂, m.m. = 58.3 g/mol]?
a) 10 g
b) 15 g
c) 20 g
d) 25 g