Instruction: Given the user's review, identify the user's sentiment from the listed options. Answer using one of the options.

Input:
I'm doing a 3 week exercise/diet program. (Yes, its Bob Harpers Kickstart to Skinny). Bought these per his recs. It has a nice lemon/lime flavor (not too strong or too disgusting like the fake ones out there). Few ingredients. No sugar, no sodium. High in Potassium and Manganese and Magnesium. I was happy surprised at how much I enjoy it. Oh, and 1 (ONE) packet = 1 LITER OF WATER! That's a LOT of bang for your buck!

Options:
A: very positive
B: positive
C: neutral
D: negative
E: very negative
Answer: A: very positive