One species of protists (species A) has cilia placed in the genus Stentor. A second species of protist (species B) has cilia and is placed in the genus Paramecium. A third species of protist (species C) also has cilia and is placed in the genus Paramecium. We assume that scientists have placed these organisms in their particular groups because of their evolutionary relationships. Which of the following cladograms BEST shows the status of the relationship among these species?