单项选择题
Consider the following argument: "My horse is racing and my heart is racing. But racing is
not significantly different from walking very quickly, which is not significantly different from walking somewhat quickly, which is not significantly different from walking somewhat slowly, which is not significantly different from walking very slowly, which is not significantly different from standing still. Therefore, racing is not significantly different from standing still. And so it would be unfair to treat racers differently than we treat those who are standing still. And therefore we must treat racers in just the same way that we treat those who are standing still. And thus we must treat my horse and my heart in the same way." This argument involves aA.conceptual slippery slope fallacy .B.fairness slippery slope fallacy.C.fallacy of ambiguity.D.all of the aboveE.none of the above