[Picturebox implementation] 1 foreground, many backgrounds - to show all backgrounds

[EARNEST]

Hello,
I would have a window form with a groupbox that should have certain amount of images.
I would have those images stored in a list, then my ZERO-th element would be my foreground. Elements at 1..N would be my backgrounds. Depending on the amount of elements in my list:
a) should I insert N-1 pictureboxes and populate them with 1 foreground and appropriate background image
b) should I somehow copy 1 picture box with the same foreground N-1 number of times and then change the background (if this is the case, any hints pls)
c) your idea
---
Thanks, EARNEST.

Draft implementation (just messing around with code)

            if (GraphBox.listOf_Images.Count >= 2)
            {
                for (int i = 1; i < GraphBox.listOf_Images.Count; i++)
                {
                    Console.WriteLine("iteration : " + i);
                    pboxFor_Images = new PictureBox();
                    pboxFor_Images.Size = new Size(img_FOREGROUND.Width, img_FOREGROUND.Height);
                    pboxFor_Images.Image = img_FOREGROUND;
                    pboxFor_Images.Location = new Point(5 + ((img_FOREGROUND.Width+5)*(i-1)), 15);
                    Image img_BACKGROUND = new Bitmap(GraphBox.listOf_Images.ElementAt(0).Width, GraphBox.listOf_Images.ElementAt(0).Height);
 
                    img_BACKGROUND = GraphBox.listOf_Images.ElementAt(i);
 
                    this.groupBox1.Controls.Add(pboxFor_Images);
 
 
                    pboxFor_Images.Image = img_FOREGROUND;
                    pboxFor_Images.BackgroundImage = img_BACKGROUND;
                }
            }
 

any other more efficient implementations?