Four switches are connected in a Layer 2 network running Rapid PVST+ for VLAN 10. The bridge IDs (priority / MAC address) are: SW1 = 32768 / 00:1A:2B:00:00:11, SW2 = 24576 / 00:1A:2B:00:00:22, SW3 = 24576 / 00:1A:2B:00:00:33, SW4 = 28672 / 00:1A:2B:00:00:44. Which switch becomes the root bridge for VLAN 10?