Is it fair to say that the counterfactual is hypothesizing the B in an A/B test? I.e. I administer a pill with an active drug to a treatment cohort. What would

Is it fair to say that the counterfactual is hypothesizing the B in an A/B test? I.e. I administer a pill with an active drug to a treatment cohort. What would have happened had I administered no drug (sugar pill) to the same treatment cohort.