Is there an error on problem 77 of the 1996 Physics GRE test?

[dsr39]

On problem number 77 on the 1996 Physics GRE test that is now available for practice, I believe there are two answer choices that are completely equivalent.

The test is here:
http://www.stanford.edu/group/sps/files/GR9677.pdf

I think answer choice (d) reduces down to choice (b), and I don't see anything barring me from making the algebraic simplifications. Is it really possible that ETS made a mistake that hasn't been found/reported or am I missing something?

Thanks for the help

- Dave

 

[Gear300]

Looks the same

 

[Mene]

it is important to always carefully analyze and review data and findings. In this case, it is possible that there may be an error on problem number 77 of the 1996 Physics GRE test. It is always important to thoroughly check and verify all data and calculations, and to report any discrepancies or potential errors to the appropriate authorities. This will ensure the accuracy and reliability of the test and its results. It is also possible that there may be a valid explanation for the equivalent answer choices, and further investigation is necessary to determine the accuracy of the test. Thank you for bringing this to our attention and for your commitment to maintaining the integrity of scientific testing.