Disclaimer: I'm no Danish teaching expert, I just happen to be an Icelander who was forced to learn Danish as my second language - and although I always got very good grades in Danish, I was never good in Danish: can't speak it, can't understand a Dane - I can maybe read it a little bit...
University of Utah geology and geophysics professor Fan-Chi Lin said the blob-shaped lower magma reservoir in Earth's lower crust is located 12 to 28 miles (20-45 km) under Yellowstone, with a volume of 11,500 cubic miles (46,000 cubic km), or 11.2 times the volume of Arizona's Grand Canyon.
In its last eruption, the Yellowstone caldera ejected 1,000 cubic kilometers of pyroclastics, making this eruption A) smaller than Mt. Mazama's (Crater Lake) last eruption B) smaller than Mt. Pinatubo's eruption in 1991 C) smaller than Mt. St. Helens's eruption in 1980 D) larger than all of the above. D.