A short fragment of a polymer chain (end groups shown) is drawn. It is completely hydrolysed so that every carbamate link is cleaved. Select all correct statements.

The fragment contains two carbamate (urethane) groups. Hydrolysis of -NH-CO-O- gives an amine, an alcohol and carbon dioxide (via unstable carbamic acid). The products are hexane-1,6-diamine, ethylene glycol and $\mathrm{CO}{}_2$, so A, B and D are correct. Hexane-1,6-diol is not formed because the six-carbon chain is attached to nitrogen.