C. A. 3d Cir. [Certiorari granted, 488 U. S. 965.] Motion of respondent Interstate Commerce Commission for divided argument denied. Motion of the Acting Solicitor General for leave to participate in oral argument as amicus curiae and for divided argument granted to be divided as follows: 30 minutes for petitioner; 30 minutes for respondent; and 30 minutes for the Acting Solicitor General, as amicus curiae.