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

Input:
This replaced a 9 year old unit which was used every day. On/Off switch had broken so needed a replacement. We were very happy to have found the same model still available. Heats up in 20 seconds looks great and is heavy-duty.

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