Context: Canada geese eat invertebrates and plants that live near water. The shape of the 's beak is adapted to filter through mud for food.
The  gathers muddy water in its beak and then pushes it out through gaps along the sides. Bits of food, such as plant roots, are left behind inside the goose's beak.
Figure: Canada goose.
Which bird's beak is also adapted to filter through mud?
A. mute swan
B. tawny owl
From the given choices, choose the correct answer and respond with the letter of that choice.

A