During August, 2010, Joes Supply Store generated revenues of $30,000, the companys expenses were as follows: cost of goods sold of $12,000 and operating expenses of $2,000, The company also had rent revenue of $500 and a gain on the sale of a delivery truck of $1,000, Joes gross profit for August, 2010 is

a.

$16,000

b.

$30,000.

c.

$18,000.

d.

$19,000.