here: here's a crude, but surprisingly effective, test:
• copy the words that constitute the issue.
• paste them into google (or another search engine).
• look at the results.
if you mostly (or entirely) see web pages
that deal with the specific GMAC item that prompted your question, then, sorry, we can't host the question.
if you mostly see
non-GMAT-related pages, then your question is probably okay.
e.g., here, when i plug your material (from
this thread) into google, i mostly see pages from physics courses. so, you are totally fine there.