Jamara has started a home party business that hosts parties and those attending paint signs. Jamara must pay $500 a year to be a representative for Paint A Sign. In addition, Jamara buys all the materials for the parties, including the metal base, the paints, brushes, stencils and transfers. These items all add up to $10 on average. Jamara charges each participant $25 for each sign they make. Considering only these costs, Jamara's Paint A Sign business breakeven volume is:

a. 14.29 participants a year.

b. 50 participants a year.

c. 20 participants a year.

d. 33.3 participants a year