17. What is the expanded form of 12.309? A. (1 x 10) + (2 X 1) + (3 x D) + (9 x 100) (B. (1 x 10) + (2 1) + (3 x 7o) + (9x7,000) C. (1 x 10) + (2 1) + (3 x 700 100) + (9x ,000 D. (1 x 10) +(3 x 1) + (3 x 7) + (9 x 7b0)​

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