A 3x3 matrix is presented.
Each cell contains a primary shape.
The pattern progresses logically across the rows and down the columns.
Which of the answer choices correctly completes the matrix in the bottom-right cell?
Row 1: [Circle with horizontal line], [Circle with vertical line], [Circle with horizontal and vertical lines]
Row 2: [Square with horizontal line], [Square with vertical line], [Square with horizontal and vertical lines]
Row 3: [Triangle with horizontal line], [Triangle with vertical line], [?]