Do the following plastics have the same clasification symbol: a.) plasticised polyvinyl chlorides and unplasticised polyvinyl chlorides b.) low density polyethylene and linear low density...

Do the following plastics have the same clasification symbol:

a.) plasticised polyvinyl chlorides and unplasticised polyvinyl chlorides

b.) low density polyethylene and linear low density polyethylene

c.) polystyrene and expanded polystyrene.

 

Please answer asap! this is for an assignment and any help will be appreciated! :)

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