Choose the multiplication equation that is represented by the model. (1 point) A model partitioned into one hundred equal parts, with seventy parts shaded vertically and ninety parts shaded horizontally. The seven columns and nine rows have sixty three parts that overlap, which are shaded darker. a 0.3 x 0.9 = 0.27 b 0.7 x 0.1 = 0.07 c 0.3 x 0.1 = 0.03 d 0.7 x 0.9 = 0.63