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:
We've used it a couple times and both times the cakes baked evenly and slid right out of the pan. Vast improvement over the thin aluminum one I had before.

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