Instruction: Determine the sentiment expressed by the user in her review from the provided choices, and respond by selecting one of the available options.

Input:
Great tool - 12lbs is just perfect for doing all sorts of core work at home and heavy enough to keep a toddler amused (just watch a 2 year old try to pick it up!).

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