This answer doesn't seem to actually answer the question, so I went to flag it as "Not an answer" *.
The dialog box that pops up gives me precisely one option:
Why do I only get that one option for flagging.
* NOTE: This question is NOT about whether that is an answer or not, it's only about the flagging options presented.
NOTE 2: That answer is now deleted. Maybe I hit it in a transitory state where I'd loaded the page prior to the final delete vote (so it appeared to still be there), but by the time I went to flag it, it had been deleted.