Evaluate the following statements to determine which one is true concerning specifying user account names.

User account names must always be coded using single quotation marks $(\text{'}).$

User account names can be coded using either single quotation marks $(\text{'}),$ double quotation marks $(\text{'}),$ or backticks $(`).$

User account names should not include special characters and therefore do not require any specific coding.

User account names can only be specified using the @ sign followed by the username and hostname.