The scatterplot below displays the amount of money Amanda earns while babysitting her niece, Emma. Based on the information in the scatter plot, which statement is a valid conclusion?

As the number of minutes Amanda spends babysitting increases, the amount of money she earns decreases.
As the number of minutes Amanda spends babysitting increases, the amount of money she earns decreases.

As the number of minutes Amanda spends babysitting decreases, the amount of money she earns per hour increases.
As the number of minutes Amanda spends babysitting decreases, the amount of money she earns per hour increases.

As the number of minutes Amanda spends babysitting decreases, the amount of money she earns per hour decreases.
As the number of minutes Amanda spends babysitting decreases, the amount of money she earns per hour decreases.

As the number of minutes Amanda spends babysitting increases, the amount of money she earns increases.