Colder and more harsh winters are being experienced in a given area for years. Because of the unexplained shift in these temperatures, oxen with thin and average length winter coats are becoming susceptible to disease and are freezing to death. The thick coated, woolly oxen however, have survived well and eventually the entire population of oxen became woolly. What type of selection does this scenario illustrate? A. Stabilizing selection B. Artificial selection
C. Disruptive selection
D. Directional selection