Laura must choose a crust and a topping for her pizza. There are four crusts to choose from: stuffed, pan, regular, and thin. There are two toppings to choose from: pepperoni and sausage. The tree diagram below shows the possible outcomes. Use the diagram to answer the questions. Crust Topping stuffed pan pepperoni sausage pepperoni sausage pepperoni sausage pepperoni Outcome (stuffed, pepperoni) (stuffed, sausage) (pan, pepperoni) (pan, sausage) (regular, pepperoni) (regular, sausage) (thin, pepperoni) (thin, sausage) regular thin sausage (a) How many outcomes are there? outcome(s) (b) How many outcomes do not have pepperoni being chosen? outcome(s) (c) How many outcomes have both thin crust and sausage being chosen? outcome(s)