In Their Studies of "Ant Plants," the Scientists in Investigating

In their studies of "ant plants," the scientists in Investigating Life 22.5 were testing what hypothesis?

A) The tramp ants promote fruit production in trees with the domatia.
B) Other species of ants were competing with the tramp ants for nectar.
C) The tramp ants were pollinating the trees.
D) Trees in good locations have enough energy to both produce food and feed ants.
E) The tramp ants were parasites eating nectar from the trees.