Which of these are examples of positive tropism? (Select all that apply.)
A. plant’s roots growing down into the soil due to gravitropism
B. a plant’s leaves growing away from the sunlight due to phototropism
C.a plant’s leaves growing toward the direction of the sun due to phototropism
D. a plant growing around an object due to thigmotropism
E. a plant growing away from an object due to thigmotropism
F. a plant’s stem growing upward out of the ground due to gravitropism