While researching a topic, a student has taken the following notes:
· It is generally accepted that all bats use echolocation to navigate.
· The statement "all bats use echolocation to navigate" is falsifiable.
· A falsifiable statement can theoretically be proved false by observation.
· "All bats use echolocation to navigate" could be falsified by observing a single bat that didn't use echolocation.
· The statement "some bats use echolocation to navigate" is not falsifiable.
· Falsifying it would require observing every bat in the universe, which is not possible.
The student wants to contrast the falsifiability of two statements about bats. Which choice most effectively uses relevant information from the notes to accomplish this goal?