Robert, a network admin in XYZ Inc. He deployed a Linux server in his enterprise network and wanted to share some critical and sensitive files that are present in the Linux server with his team…

Robert, a network admin in XYZ Inc. He deployed a Linux server in his enterprise network and wanted to share some critical and sensitive files that are present in the Linux server with his team members in a way that all his team members would have read-only permissions but no one other than him (the owner) can only read/write the files but cannot edit or delete the files. Which of the following chmod commands can Robert use in order to achieve his objective?