A clothing design company pays two different people to design its t shirts. The company pays person A $8 more an hour and pays person B $10. Person A cannot work more than 6 more hours than person B, but they cannot work more than 25 hours total. Person A makes the company a profit of $12 an hour, and person B makes the company a profit of $20 an hour. If the cost to the company wants to make at least $200 in profit, which value will minimize the cost to the company? (Each point is (a, b) where a is the hours person A works and b is the hours person B works.)