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

Input:
These are perfect for my granddaughter's dance classes .  She is in dance for several hours a week.  The convertible tights is just what she needed to be comfortable and efficient for ballet.

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