CMAT 2018 Solved Question Paper

Four packets P,Q R and S, three wallets A, B and C are kept on a table one after the other in a row from left to right. Wallet C has as many items to its left as to its right. No packet is at any extreme end of the row. Packet P is kept to the immediate left of Packet R. Packet P is kept to the immediate right of wallet A. What is kept third from left end of the row on the table?