Which statement is true? A. All squares are rectangles. Rectangles have 4 right angles. Therefore, all squares have 4 right angles. B. Only some squares are rectangles. Rectangles have 4 sides that are the same length. Therefore, only some squares have 4 sides that are the same length. C. Only some squares are rectangles. Rectangles have 4 right angles. Therefore, only some squares have 4 right angles. D. All squares are rectangles. Rectangles have 4 sides that are the same length. Therefore, all squares have 4 sides that are the same length.