Which statement about VPNv6 addresses is true？（）
- AThe VPNv6 address is a 96-bit route distinguisher and a 128-brt IPv6 address
- BThe VPNv6 address is a 64-bit route distinguisher and a 128-bit IPv6 address
- CThe VPNv6 address is a 64-brt route distinguisher and a 96-brt IPv6 address
- DThe VPMv6 address is a 96-brt route distinguisher and a 96-bit IPv6 address
- EThe VPNv6 address is a 128-bit route distinguisher and a 128-brt IPv6 addre