JEE Main 2018 Chemistry question

For per gram of reactant, maximum quantity of N gas is produced in which of the following thermal decomposition reactions ? (Given : Atomic wt. : Cr = 52 u, Ba = 137 u)

• (A)Ba(N)(s) → Ba(C) + 3N(g)
• (B)(NH)CrO(s) → N(g) + 4HO(g) + CrO(s)
• (C)2NH(g) → N(g) + 3H(g)Correct
• (D)2NHNO(s) → 2N(g) + 4HO(g) + O(g)