The Following Scatterplot Shows Heights (In Centimeters) of Spartina Alterniflora

The following scatterplot shows heights (in centimeters) of Spartina alterniflora plants against the amount of sunlight they were given (in minutes) . Those plants grown at sea level are represented by a closed circle and those grown on the International Space Station (ISS) (0 atmospheres) are shown with an open circle.
What can we conclude from this scatterplot?

A) There is a strong positive association for plants grown at sea level, but a negative association for plants grown in the ISS.
B) There is a strong association for plants grown at sea level, but a positive association for plants grown in the ISS.
C) There is a weak association for plants grown in both locations.
D) Association cannot be assessed here because a categorical variable is involved.