A sailing boat with the number 6 on its sail floats on a lake. Which panel shows its reflection in the water?

Everything turns upside down and stays on the same side: the hull goes to the top, the sail and its 6 hang below on the right, the flag points left at the bottom, and the 6 itself turns over (its closed loop goes to the top): (a). (b) leaves the 6 upright; (d) puts the sail on the left; (c) also flips left-right.