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

Input:
Easy to install.  Since these are the microfresh bags, people have told me that they do not hold as much in the bag so you have to change the bag more often but I think it is important to change the bag quite often whether is is full or not so it does not bother me.  If you vacuum a LOT, for a couple more dollars you can get 10 bags of the non-microfresh.  I do not notice a big difference between the micro and non-microfresh bags.

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