Which of the Following Statements Is/are CORRECT

Which of the following statements is/are CORRECT?
1) Polyethylene forms by the addition reaction of C₂H₄ molecules.
2) Copolymers form by the polymerization of two (or more) different monomers.
3) A condensation reaction involves reacting two monomers and splitting out a small molecule,often water.

A) 1 only
B) 2 only
C) 3 only
D) 1 and 3
E) 1,2,and 3