Acrylonitrile (C3H3N) is the starting material for many synthetic carpets and fabrics. It is produced by the following reaction: 2C3H6(g) + 2NH₃(g) + 3O2(g) → 2C3H3N(g) + 6H₂O. What is the starting material for many synthetic carpets and fabrics?
1) C3H3N
2) C3H6
3) NH₃
4) O2