请结合写作要求对材料中出现的主体段内容进行排序。Directions: For this part, you are allowed 30 minutes to write an essay commenting on short-video platforms, such as TikTok. You should write at least 120 words but no more than 180 words.①Some advantages of short-video platforms will be listed in this paragraph. ②Secondly, short-video platforms open up a new channel for sellers to sell goods. ③With short-video platforms, sellers can make videos related to their products and upload them to the platforms, which can clearly show the goods to customers in a short time. ④Firstly, short-video platforms provide people with a free way to learn. Quite a lot of free video resources are available on the platforms, which creates conditions for acquiring new knowledge at zero cost. ⑤In this way, their products may be sold to their fans or people who watch the video very quickly.请根据写作要求作答。A、①⑤②③④B、①③②④⑤C、①④②③⑤