Kevlar is synthesized by the condensation polymerization of which of the following pairs of monomers?

Options:

• A: Hexamethylenediamine and adipic acid
• B: 1,3-phenylenediamine and isophthaloyl chloride
• C: Ethylene glycol and dimethyl terephthalate
• D: 1,4-phenylenediamine and terephthaloyl chloride

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