Which of the following sentences is punctuated correctly?
AMark and Ryan who had been sitting there for an hour finally decided to leave.
BMark and Ryan, who had been sitting there for an hour, finally decided to leave.
CMark and Ryan, who had been sitting there for an hour finally decided to leave.
AMark and Ryan who had been sitting there for an hour finally decided to leave.
BMark and Ryan, who had been sitting there for an hour, finally decided to leave.
CMark and Ryan, who had been sitting there for an hour finally decided to leave.