(b) Crosslinking of polyethylene (PE) will change PE from a thermoplastic to a thermoset. The required degree of cross-linking for PE, according to ASTM Standard F876, is between 65% and 89%. Predict what would happen to the impact strength of crosslinked PE, if the degree of crosslinking is 95%. For wire and cable applications, which type of PE is the preferred one, low density PE or high density PE? Provide a reason