In a Java SE environment, while executing MyApplication, the system properties is found to contain the key, value pair below. Which of the following may have caused this entry to be added?

operatingmode, agent

This line of code has executed since application

launch: System.getProperties $().$getProperty $().$ getOperatingMode $().$ setValue $("$agent$")$ ;

Application was launched with the command: java $-$Doperatingmode$=$system MyApplication agent

This line of code has executed since application

launch: System.getProperties $().$ setProperty $("$operatingmode$",$ "agent"$)$;

Application was launched with the command: java $-$Doperatingmode$=$agent

Application was launched with the command: java MyApplication operatingmode agent