Which of the following statement about A/B testing is false?

A: A/B testing in its essence is a type of experiment.

B: A/B testing can be performed on different elements (e.g., CTA buttons, color of the webpage).

C: Including multiple changes between version A and version B in one testreduces the uncertainty in the conclusion a researcher draws from the test.

D: An A/B test should be run for at least one week