1,3,5-Triazine-2,4,6-triamine
1,3,5-Triamino-2,4,6-triazine
2,4-Diamino 1,3,5-triazine
2-Amino-1,3,5-triazine
The correct option is B 1,3,5-Triamino-2,4,6-triazine. 1,3,5-Triamino-2,4,6-triazine is the chemical name for melamine.