The synthesis of bio-derived polyamides, such as Nylon-4,10 from castor oil, represents a key advancement in green chemistry to reduce reliance on petrochemicals. Which pair of functional groups must undergo a condensation reaction to form the characteristic repeating backbone linkages of this sustainable polymer?
−COOH-\text{COOH}−COOH and −OH-\text{OH}−OH
−C=C−-\text{C=C}-−C=C− and −NH2-\text{NH}_2−NH2
−COOH-\text{COOH}−COOH and −NH2-\text{NH}_2−NH2
−OH-\text{OH}−OH and −NH2-\text{NH}_2−NH2