PLEASE HELP! if not its ok

Read this line from "the Song of Wandering Aengus" by William Butler Yeats.

And walk among long dappled grass,

What does "long dappled grass" mean?


A) It shows the texture and movement of the grass.


B) It suggests that the grass is tall and in need of cutting.


C) It suggests spots where sunlight is shining on it.


D) The grass is flattened by people walking on it.