Why would Antonio's actions in reading section 2.6, "Going into Business," be considered moral from an act utilitarian standpoint?

What will be an ideal response?

Act utilitarians believe that what people don't know won't hurt them. Antonio's actions are morally permissible because he successfully kept his actions a secret from others. Since act utilitarianism focuses on the result, not the intention behind the action, Antonio's behavior is actually beneficial to the overall level of happiness.