According to [the Low Quality Posts reviewing guide](http://meta.stackexchange.com/a/180029/295684):

> If the above doesn't apply, choose **Looks OK**. This is the correct choice for answers that are just wrong.

("The above" refers to non-answers and repairable mistakes - deletion and editing, respectively.)

That said, I don't think anyone would blame you for using Recommend Deletion on pointless, blatantly useless answers.