Which of the following could function effectively as a topic sentence? (select all that apply) A. Preheat the oven to 350 degrees F B. The rain had come early, soaking the green Kentucky hills, but Marie chose to go for her run anyway. C. Nevertheless, there are serious problems with the pearl-fishing industry. D. Although, some people think of cologne as old-fashioned, I prefer to consider it timeless. E. Examples of nonferrous metals include copper, lead, and gold.