Detailed Instructions: In this task, you're given a review from Amazon. Your task is to generate a rating for the product on a scale of 1-5 based on the review. The rating means 1: extremely poor, 2: poor, 3: neutral, 4: good, 5: extremely good.
Q: I purchased this product on the recommendation of a chemist friend who waxes not stop about the benefits of Vitamin C. The real issue though is that the cheaper ones don't absorb well. What matters is how much is absorbed into the body, not how much you put in. The Liposomal is made in a way that the majority of the Vitamin C is absorbed, whereas the regular cheaper vitamin C absorbs at perhaps 20-25% efficiency.
A:
5