Lucas was not happy because he was working by himself. his coworker had called in sick, and they were expecting their regular wednesday night group of softball players. lucas was not feeling too well himself. on top of this, the large group canceled at the last minute. unfortunately, lucas had already started cooking a dozen burgers on the grill. lucas finished cooking the hamburger patties until they were well-done, and then he put them in a pan on the counter. “maybe someone will order a burger later,” he thought. because there were no customers yet, he made a quick run to the restroom. when he finished, he wiped his hands on his apron, combed his hair, and headed back to the kitchen. twenty minutes later, lucas got his first customers of the evening. they were an elderly man and his four-year-old granddaughter. lucas was happy when they ordered a burger to share. “cook it medium,” the man said. it looked like the premade burgers would stay on the counter for a while. lucas went back to the kitchen and put a fresh patty on the grill. then he wiped off the cutting board he had used earlier for prepping raw chicken. he sliced the tomatoes and onion. when the burger just passed medium-rare, he plated it up. 1 what did lucas do wrong? 2 what should lucas have done?