Match the Statements on the Left with an Appropriate Response

Match the statements on the left with an appropriate response from the right. Responses on the right may be used more than once or need not be used at all.
-________ contains 4 moles of H atoms

A) 1/4 mole CH₄
B) 1/4 mole NH₃
C) 2 moles H₂O
D) 1/2 mole N₂H