The monomers of $\text{nylon-}2\text{-nylon-}6$ are:

• A
  $A$. $\text{Glycine}$ and $\text{amino caproic acid}$
• B
  $B$. $\text{Hexamethylene diamine}$ and $\text{adipic acid}$
• C
  $C$. $\text{Glycine}$ and $\text{aminovaleric acid}$
• D
  $D$. $\text{Hexamethylene diamine}$ and $\text{sebacic acid}$