PCO A1-11-22-50-60-71 $9 PC1 A1-11-22-50-60-72 S7 A1-11-22-50-60-70 PC2 A1-11-22-50-60-73 PC3 A1-11-22-50-60-74 Consider the local area network (LAN) in the figure above. There are 3 layer-2 switches (S7, s8, and S9) and 5 PCs (PC0, PC1, PC2, PC3, and PC4). The MAC address of 5 PCs are given in the diagram. The switch maintains a table called the switching table to forward the frame. Initially switch tables are empty. a. If PCO wants to send data PC4, then which PC will receive the data, and which switch will receive the data.