If You Wanted a Grass Plant to Bend to the Right,where

If you wanted a grass plant to bend to the right,where would you want to apply auxin?

A) on the right side of the tip of the grass
B) on the left side of the grass, a few centimeters down from the tip
C) on the left side of the tip of the grass
D) on the right side of the grass, a few centimeters down from the tip