How Many Atoms of Each Element Appear on Each Side $\rarr$

How many atoms of each element appear on each side of the arrow in the following chemical equation? 3Cl₃BNH₂CH₃ + 6(CH₃) ₃N $\rarr$ 6(CH₃) ₃NHCl + B₃N₃Cl₃(CH₃) ₃ Hint: Distribute coefficients across the entire compound for each reactant and product. Be sure to account for parenthesis.

A) 9Cl, 3B, 9N, 54H, 6C
B) 9Cl, 3B, 9N, 69H, 21C
C) 3Cl, 3B, 9N, 15H, 21C
D) 9Cl, 1B, 9N, 54H, 9C
E) 3Cl, 3B, 9N, 69H, 18C