A sequence: [white square] → [square with top-left quadrant shaded] → [square with top-left and top-right quadrants shaded] → [square with top-left, top-right, and bottom-right quadrants shaded] → [?]. What comes next?
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A
Fully shaded square (all 4 quadrants)
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B
Square with only bottom-left shaded
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C
White square
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D
Square with diagonal shading