Consider the following statements for condensation polymerization-I. Bifunctional or polyfunctional monomersII. Loss of each kind of functional group in each step for bifunctional speciesIII. Always accompanied by the release of a byproduct moleculeIV. Monofunctional or polyfunctional monomersWhich of the following are true?

• A. I and II
• B. I, II and III
• C. I and III
• D. III and IV