What is the number of phases and components in the following reaction? Fe + H2O (Gas) ⟶ FeO + H2 (Gas)

What is the number of phases and components in the following reaction? Fe + H2O (Gas) ⟶ FeO + H2 (Gas) Correct Answer 3, 3

Here we have two solids and two gases, so the number of phases is two. Also the number of species is 4 (i.e N=4) and the number of reactions is one (i.e E=1). Therefore, the number of components is C = N-E = 4-1 = 3.
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