The profit of a lemonade stand can be found by the equation P=0.5G−4, where G is the number of glasses sold and P is the profit in dollars. Which statement describes the meaning of the slope in this equation?

A.
Profit decreases by $4 for each glass of lemonade sold.


B.
Profit increases by $0.50 for each glass of lemonade sold.


C.
Profit increases by $1 for every 12 glasses of lemonade sold.


D.
Profit decreases by $1 for every 4 glasses of lemonade sold.