Refer to the exhibit. Initially， LinkA is connected and forwarding traffic. A new LinkB is then attached between SwitchA and HubA. Which two statements are true about the possible result of attaching the second link？（）
- AThe switch port attached to LinkB will not transistion to up.
- BOne of the two switch ports attached to the hub will go into blocking mode when a BPDU is received.
- CBoth switch ports attached to the hub will transition to the blocking state.
- DA heavy traffic load could cause BPDU transmissions to be blocked and leave a switching loop.
- EThe switch port attached to LinkA will immediately transition to the blocking state.