12 Mateo is having a backyard event to celebrate his graduation from high school. Since he loves to eat barbeque, his father plans to make pulled pork as the main dish. Other family members will be bringing side dishes like potato salad, baked beans, and coleslaw. Mateo estimates that there will be about 80 people at his party, so he decides to have the food laid out and allow everyone to help themselves. What type of dining is this called? A. casual B. buffet C. family D. formal