Which of the Following Reactions Is a Good Small-Scale Laboratory $\to$

Which of the following reactions is a good small-scale laboratory method for preparation of hydrogen?

A) CH₄(g) + H₂O(g) $\to$ CO(g) + 3H₂(g)
B) 3FeCl₂(s) + 4H₂O(g) $\to$ Fe₃O₄(s) + 6HCl(g) + H₂(g)
C) NaH(s) + H₂O(l) $\to$ NaOH(aq) + H₂(g)
D) CO(g) + H₂O (g) $\to$ CO₂(g) + H₂(g)
E) None of the above methods is useful.