Choose the correct answer. 3a2 (ab+bc+ca) =

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โœช Choose the correct option.

Choose the correct answer. 3a2 (ab+bc+ca) =

A. 3a2+3a2bc+3a3c
B. 3a3b+3a2bc+3c
C. 3a3b+3a2bc+3a3c
D. a3b+abc+a2c

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