Volcanic eruptions cause many hazards to humans, and many geologists are employed to study these hazards and warn people. For a single, large, explosive volcanic eruption such as Mt. St. Helens, which of the following is not a worry that these volcanic-hazards geologists would warn people about? A. Pyroclastics, including bus-sized pieces that could fall on people’s heads and kill them. B.Tsunamis, or giant waves, that could drown people, if the volcano is in the ocean or a very large lake and the eruption moves a lot of water out of the way. C. Mudflows and landslides that could bury people and buildings. D. Climatic warming, with the volcano causing a sudden heat wave that would harm people living in big cities. E. Poisonous gases, that could kill people who breathe them in.