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

Input:
Easy to mount.  But main bolt (around half or 3/8") came with non working threads.  Returned it.  Amazon made it easy.  Believe it or not, ordering another now.  They can't.possibly send me another defective one.  Can they? Otherwise preferred this rack's design and strength over others.

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