Don't --- in bed, it's bad for your eyes.

Don't ___ in bed, it's bad for your eyes.
A.reading B.is reading
C.to read D.read
请高手为我讲解下,该选哪个,我好象记得是在祈使句中don't后要用-ing形式,不知道我记的对不对,谢谢了,我将感激不尽!