A couple easy questions related to polymers

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1. HIPS is a :
a)Polystyrene-Polybutadiene blend
b)High Impact Polybutadiene Blend
c)Polystyrene-Polybutadiene copolymer blended with polystyrene and polybutadiene
d)High polystyrene matrix material

I'm pretty sure it's not B, and I'm leaning towards C, but I'm not very confident



2. A copolymer that is created with many large groups of like mers attached to each other would be best called a ______________ copolymer.

I'm not sure on this at all but i think it's "block"



please only answer if you're positive, because i want to makesure i understand all this

thanks
 

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