Which statement best describes the geology of Hot Springs National Park?

a. Sedimentary rocks formed when North America was near the equator and are still flat and low-lying
b. Fold and thrust belt deforming mostly sedimentary rocks in a soft collision
c. Series of terranes accreted on an ancient subduction zone
d. Collisional mountain range with moderate amount of time for erosion and rebound
e. Basement rock uplifted by an ancient continental collision