Give the reaction of methane with steam for the production of dihydrogen.

• A
  $CH_{4(g)} + H_2O_{(g)} \xrightarrow{Ni} CO_{2(g)} + 2H_{2(g)}$
• B
  $CH_{4(g)} + H_2O_{(g)} \xrightarrow[1270 \ K]{Ni} CO_{(g)} + 3H_{2(g)}$
• C
  $CH_{4(g)} + 2H_2O_{(g)} \xrightarrow{Ni} CO_{2(g)} + 4H_{2(g)}$
• D
  $CH_{4(g)} + \frac{1}{2}O_{2(g)} \xrightarrow{Ni} CO_{(g)} + 2H_{2(g)}$