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:
Bought for airplane travel to use with my small Acer Aspire One.  Plugged into USB port and it auto-installed and worked immediately.  Small enough to put in carry on bag when flying.  Small enough to fit on tray table with this small laptop.

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