In the following diagram, if red spheres are the element $\mathrm{A}$, white spheres are the element $\mathrm{B}$, and green spheres are the element $\mathrm{C}:(8.1,8.2,8.3)$
a. Write the formula for each of the reactants and products.
b. Write a balanced equation for the reaction.
c. Indicate the type of reaction as combination, decomposition, single replacement, double replacement, or combustion.