What is the correct product of the Diels-Alder reaction between 2-ethoxybuta-1,3-diene and (Z)-acrylaldehyde-3-d? What is the correct product of the Diels-Alder reaction between 2-ethoxybuta-1,3-diene and (Z)-acrylaldehyde-3-d?

It keeps mentioning that my regio-selectivity is incorrect. And that I should consider the charge distributions of the diene and dienophile to figure it out correctly, but I honestly have no idea.
These resonance structures and the polarization shown within explain the regioselectivity (1,4 isomer instead of 1,3) in the product.