During August, 2010, Joe's Supply Store generated revenues of $30,000, the company's 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, Joe's gross profit for August, 2010 is O a. $19,000. b. $18,000. O c. $30,000. O d. $16,000