Consider the following plot that shows the sepal width versus sepal length for $50$ flowers from each of three species of iris $($setosa$,$ versicolor, and virginica$).$

Sepal Width $($cm$)$ vs Length for $150$ iris flowers

Species $$ setosa $-$ versicolor $$ virginica

Which of the following statements about this plot is accurate?

$(1)$ The species of each flower has been mapped to the color of each point.

$(2)$ The sepal width of each flower has been mapped to the color of each point.

$(3)$ This plot exhibits the use of faceting as a strategy to encode a categorical variable.