The diagram below shows a chemical reaction where blue spheres represent nitrogen atoms and yellow spheres represent fluorine atoms. Provide the molecular formula for the reactants and products, assuming all molecules are in the gaseous state.

• A. Reactant: N₂F₂
  Product: NF₃
• B. Reactants: N₂ and F₂
  Product: NF₃
• C. Reactant: N₂F₂
  Product: FN₃
• D. Reactants: N₂ and F₂
  Product: FN₃

Answer: (B)