"If You Hire 1 Worker, the Worker Can Produce 20

"If you hire 1 worker, the worker can produce 20 pizzas a day. If you hire a 2nd worker, that worker can produce 10 more pizzas. If you hire a 3rd worker, that worker can produce 2 more pizzas a day." A graph displaying this relationship between the number of employees and total pizza output per day would show

A) a positive linear relationship.
B) an upward-sloping curve that becomes less steep.
C) a negative linear relationship.
D) a negatively-sloped curve that becomes less steep.