Question: Low - density polyethylene undergoes extensive ( over 1 0 0 % ) elongation prior to rupture, while polystyrene undergoes only 1 - 2 %

Low-density polyethylene undergoes extensive (over 100%) elongation prior to rupture, while polystyrene undergoes only 1-2% elongation. What is the main reason for this difference?
A. The polyethylene is less dense.
B. The large styrene groups in the polystyrene prevent slippage.
C. More cross-linking occurs in the polystyrene.
D. Polyethylene is less crystalline.
Low - density polyethylene undergoes extensive (

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