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Expand (2a – 3b + 4c)2 

A) 4a2 – 9b2 + 16c2 – 12ab – 24bc + 16ac 

B) 4a2 + 9b2 + 16c2 – 12ab – 24bc + 16ca 

C) 4a2 – 9b2 – 16c2 – 12ab – 24bc + 16ca 

D) 4a2 + 9b2 + 16c2 – 12ab + 24bc + 16ac

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