In the Presence of Cyanuric Acid (C₃H₃N₃O₃),melamine (C₃H₆N₆)can Form Crystals $\times$

In the presence of cyanuric acid (C₃H₃N₃O₃) ,melamine (C₃H₆N₆) can form crystals that potentially cause renal failure if ingested.Which contains the most nitrogen?

A) 1.22 $\times$ 10²⁴ C₃H₆N₆ molecules
B) 2.78 mol C₃H₆N₆
C) 6.54 $\times$ 10²⁴ C₃H₃N₃O₃ molecules
D) 10.3 mol C₃H₃N₃O₃
E) 2.56 mol C₃H₆N₆ + 2.56 mol C₃H₃N₃O₃