13. How did the swarm respond to horizontal shaking compared to vertical shaking?

A. The swarm detected and compensated for
either horizontal or vertical movement equally efficiently.

B. The swarm detected and compensated for vertical movement, but it could not
compensate for horizontal movement.

C. The swarm detected and compensated for horizontal movement, but it could not
compensate for vertical movement.

D. The swarm compensated for both horizontal and vertical shaking, but it broke up when horizontal shaking exceeded vertical shaking.