Every cell of this $3\times 3$ grid holds one symbol. Which panel shows the grid as seen in the dashed mirror?

Each symbol moves to the opposite column of the same row and is itself flipped: the orange arrow (now top-left) points right, the yellow triangle has its right angle bottom-right, the shaded half is now the right half, the L-stroke opens to the left and the blue arrow points up-left: (a). (c) moves the L-stroke without flipping it; the circle and the two dots alone cannot tell you the answer.