A 3x3 matrix contains different shapes. The first row contains a circle, a triangle, and a square. The second row contains a circle with one dot inside, a triangle with one dot inside, and a square with one dot inside. The third row contains a circle with two dots inside, a triangle with two dots inside, and a missing shape. Which of the following shapes completes the matrix?
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A
A square with one dot inside
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B
A circle with three dots inside
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C
A square with two dots inside
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D
A triangle with two dots inside