Which compounds could be used in a Diels-Alder synthesis of O OCH3 + enantiomer O OCH3 OCH3 IT III IV X O I and III O I and IV O II and III O II and

I am having difficulty with the question attached below. At first I thought the correct option was I and II (which is cut off), but that was incorrect. If you could explain what the correct answer would be, that would be very helpful.

Which compounds could be used in a Diels-Alder synthesis ofOOCH3+ enantiomerOOCH3OCH3ITIIIIVXOI and IIIOI and IVOII and IIIOII and IV