Which pair of functional groups react together to form a polyester during condensation polymerisation?
Alcohol (−OH-\text{OH}−OH) and carboxylic acid (−COOH-\text{COOH}−COOH)
Alcohol (−OH-\text{OH}−OH) and amine (−NH2-\text{NH}_2−NH2)
Carboxylic acid (−COOH-\text{COOH}−COOH) and amine (−NH2-\text{NH}_2−NH2)
Alkene (−C=C−-\text{C}=\text{C}-−C=C−) and alcohol (−OH-\text{OH}−OH)