Vulcanization of Rubber Improve Elasticity by _____________

Vulcanization of rubber improve elasticity by _____________.

A) allows slow crystallization of the polymer to create areas of high density that do not flex.
B) creating regions of low density that resist shocks better than high density polymer
C) crosslinking the polymer backbones, preventing them from moving past one another
D) creates regular, but small, crystalline regions within the polymer that pin the elastomer into place.
E) All of the above