Which sentence is the correctly written simple sentence? A. In late fall, snow and ice cover the roads. B. Snow and ice are just two dangers

Which sentence is the correctly written simple sentence? A. In late fall, snow and ice cover the roads. B. Snow and ice are just two dangers in winter avalanches are another. C. In late fall, snow begins falling, and by winter ice covers the roads. D. Snow covers the roads, and ice is dangerous in late fall.