Exercise 10. Density plots - 2

Here are three density plots. Is it possible that they are from the same dataset? Which of the following statements is true:

50 XP

It is impossible that they are from the same dataset.
They are from the same dataset, but different due to code errors.
They are the same dataset, but the first and second undersmooth and the third oversmooths.
They are the same dataset, but the first does not have the x-axis in the log scale, the second undersmooths and the third oversmooths.