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:
My mother-in-law has used these in assisted living for two years to keep her arthritic hands warm.  I buy them by the case on amazon.  I read the reviews on the other brands.  This particular brand does warm up reliably and does stay warm for a respectable period of time.  She has never burned her hands on these, though we did test them initially to make sure that they would not get too hot and end up burning her skin.

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