$................................................................................$July August September

Units produced $5,0007,50010,000$

Indirect materials $ $800$ $ $900$ $ $1,000$

Utilities $$5,000$ $$7,500$ $$10,000$

Rent $$4,000$ $$4,000$ $$4,000$

Direct labor $$6,000$ $$9,000$ $$12,000$

Using the above data, what type of cost is Rent?

Variable

Mixed

Step$-$Variable