General Studies · Seating Arrangement

Eight people—P, Q, R, S, A, B, C, and D—are sitting around a circular table facing the center. P sits second to the right of A, who is third to the right of B. R sits third to the left of S, who sits second to the right of D. Q sits opposite to C, who is not an immediate neighbor of B. If R interchanges its position with S and Q interchanges its position with P, who sits opposite to D?