Skototropism Is an Unusual Tropism Based on Growth Toward Darkness

Skototropism is an unusual tropism based on growth toward darkness rather than toward light as in phototropism.Which of these is an example?

A) plants growing in the shade of another plant
B) germinating seedlings growing through the soil
C) root tips growing in the soil
D) vine seedlings on the forest floor searching for tree trunks to climb
E) night-blooming flowers