How can major volcanic eruptions like Mt. St. Helens cause increases in natural erosion up to many kilometers away from the volcano?%0D%0A%0D%0AAnswer options with 4 options%0D%0AA.%09%0D%0ADuring some eruptions, pumice falls to the surface, causing large impact craters to form.%0D%0A%0D%0AB.%09%0D%0ADuring some eruptions, glaciers on the mountain move faster, causing U-shaped valleys to form.%0D%0A%0D%0AC.%09%0D%0ADuring some eruptions, snow and ice melt on the mountain, causing greater river flows downstream.%0D%0A%0D%0AD.%09%0D%0ADuring some eruptions, new layers of sediment form as falling volcanic ash settles back to the surface.