Commitment occurs when $\_\_\_.$ A$)$ external sources motivate it B$)$ people identify with the influencer's request and are highly motivated to implement it even when extrinsic sources of motivation are no longer present C$)$ people or work units oppose the behavior desired by the influencer and consequently refuse, argue, or delay engaging in the behavior D$)$ people resist all the influential tactics E$)$ people are motivated to implement the influencer's request at a minimal level of effort and for purely instrumental reasons