Question: In a clinical trial, the non-inferiority of the HDP-MDI inhaler (experimental) was evaluated against the FDC-ELIPTUS inhaler (control). The lower clinically relevant limit was set at -50 ml in the forced expiratory volume in the first second (FEV1). The results showed an absolute difference in FEV1 between treatments of +8 mL in favor of the HDP-MDI inhaler (95% confidence interval: -59 ml to +67 ml). Point out the CORRECT answer: 
 Options:  <1> The new HDP-MDI inhaler is superior to the control inhaler. <2> The FDC-ELIPTUS inhaler is non-inferior to the experimental inhaler. <3> The study is not conclusive. <4> Both inhalers are equivalent. <5> The HDP-MDI inhaler is non-inferior to the control inhaler.
3