What is how many ghost show up in a christmas carol?

In Charles Dickens' A Christmas Carol, there are four supernatural visitors, commonly referred to as "Ghosts".

• Jacob Marley's Ghost: This is the first spirit to appear to Ebenezer Scrooge.
• The Ghost of Christmas Past: The second spirit who shows Scrooge scenes from his earlier life.
• The Ghost of Christmas Present: The third spirit, showcasing current Christmas celebrations and the Cratchit family.
• The Ghost of Christmas Yet to Come (also known as the Ghost of Christmas Future): The final and most frightening spirit, revealing the potential consequences of Scrooge's miserly ways.