This reaction is an explosive reaction of a strong acid combining with a strong base.

H2SO4 + 2NaOH → 2H2O + Na2SO4

Which compounds are the reactants and which are the products?

A.
reactants: H2SO4 + 2NaOH
products: 2H2O + Na2SO4

B.
reactants: 2NaOH + Na2SO4
products: H2SO4 + 2H2O

C.
reactants: 2H2O + Na2SO4
products: H2SO4 + 2NaOH

D.
reactants: H2SO4 + 2H2O
products: 2NaOH + Na2SO4