How to show & in display name?

We hope to show the display name as A&B, however It shows A&B in Jitsi Meeting

Our coding as following, please kindly advise how should we do?

 const options = {
    roomName: "xxx",
    parentNode: document.querySelector("#meet"),
    configOverwrite: { prejoinConfig: {
     enabled: false,    
 }, },
    userInfo: {
      displayName: "**A&B**",
    },
    endofjson: true,
  };

 this.api = new JitsiMeetExternalAPI(domain, options);