Which three techniques can a developer use to debug the JavaScript?

Refer to the Lightning component below:

The Lightning Component allows users to click a button to save their changes and then redirects them to a different page. Currently when the user hits the Save button, the records are getting saved, but they are not redirected.

Which three techniques can a developer use to debug the JavaScript? Choose 3 answers
A . Use the browser’s dev tools to debug the JavaScript.
B. Enable Debug Mode for Lightning components for the user.
C. Use Developer Console to view checkpoints.
D. Use console.log () messages in the JavaScript.
E. Use Developer Console to view the debug log.

Answer: A,B,D