Which of these situations does not have quantities that combine to make 0? O A. A hot air balloon rises 40 feet. It then drops 40 feet to the ground. OB. A dolphin swims 20 feet straight down from the surface. It then rises 20 feet to return to the surface. O C. Hiroko earns $20 working concessions at the football game. She then earns $20 as a babysitter. O D. In the morning, the temperature rises 30 degrees. In the evening, it falls by 30 degrees.