Which of the following best describes why and how the geography of coal production has changed in the US in the past four decades? Group of answer choices The increased demand for low-sulfur coal has shifted the center of coal production to Wyoming and other western states Discoveries of massive coal deposits along the Pacific Coast have made California and Oregon dominant in coal production Lower labor costs have shifted coal production almost entirely to the southern Atlantic states, like Georgia, South Carolina, and North Carolina Changing environmental regulations have shifted an ever-increasing percentage of coal production to the East and Midwest The rapid depletion of US coal supplies has made the US increasingly dependent on coal produced in China and Russia