The correct option is B For now many fruit sellers must weigh the relative values of aroma, color, and freshness when deciding whether to use 1-MCP.
Option C is the correct answer. The passage states the conditions of fruits as effected by the use of the 1-MCP, which altered its rate of sustaining freshness, suggesting that careful consideration must be done before its application. The statements of options A,B and D are incoherent in the context of the question and, thus, are incorrect.