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

Input:
This is a heavy duty line-up of pressure cookers for serious canners, well worth the money.  The lid pops on in a snap, easy to gauge pressure - very happy!

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