Choose the monomers that, upon heating, would produce the following polymer.
(note that hydrogen atoms on the carbons on not explicitly shown)
So far I've realized that if you combine figure "A" with itself it forms the desired product, but I'm not sure if there are any solutions. When you combine a with itself you form H2O (condensation) and NH
2CH
2CH
2CONHCH
2CH
2COOH. Now if that product continues to bind with A's it will continue as the chain described.