Leo's currently sells $$5,000$ of wood toys and $$2,000$ of metal toys. Leo's wants to begin selling plastic toys. If it does, the expected sales are $$7,500$ of wood toys, $$2,500$ of metal toys, and $$3,500$ of plastic toys. What is the value of the complementary effect of the plastic toys?

Multiple choice question.

$$500$

$$3,000$

$$3,500$

$$6,500$