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

Input:
Good luck trying to get the device to recognize your hand-heldremote controls.  The documentation is badly written and evencontradictory is some spots. On page 8, Step 5, it says "Repeat step 3 & 4 for additional devices".  On the very same page, after Step 6, it says "Repeat steps 2,3 & 4 for additional devices".  OK, folks, which one is it?  I taught a ReplayTV remote to learn how to control 3 devices, set up all the cabling, and had no trouble running a complex TV, 2-VCR, ReplayTV set up until I got to this product.  It's been over one day now, and I still have to select devices manually.... There is nothing on the RCA website of any technical help.  Also, you will not find any description in the documentation of how this product is supposed to work with your remotes after it "learns" the codes.  How do you know it's working then?  Don't waste $80 on this kludge.  Go get a cheap manual switch.  It will work with a lot less aggravation.

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