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:
The item deters theft but it is very expensive.  Locks of this type are not engineering masterpieces and can be defeated.  All Thule bike racks should include this lock.

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