Six business negotiators M, O, P. R, S, and T are to be seated at a round table to discuss a business deal. There are exactly six chairs around the table, Each negotiator sits facingcenter of the table and is directly opposite to a negotiator across the table. The seating arrangement is subject to the following restrictions T cannot sit next to P S cannot sit next to M. R must sit next to M. If T sits  directly across the table from O, who must sit on either side of P?