A great article on Quora about the art of producing wrong answers
The art of creating questions include a good question. A correct answer. And the least noticed and yet an artwork: The incorrect alternatives. Check out how the many great advice on how to make good "wrong" answers is given in this link.
Having this advice read: Note that WOK guidelines have some limitations of an incorrect alternative always being incorrect. Half right is not an option.
"Right, Sexy Wrong, Somewhat reasonable, Obviously flawed. " is an advice short enough to remember.