In the Huawei remote replication solution, which of the following statements is correct?

1. Synchronous remote replication technology can achieve RTU=U, RPO=0,

2. Write data directly to the local storage, and quickly roll back and restore data through snapshot technology

E. A.1 wrong 2 right

F. B. 1 wrong 2 wrong

G. C. 1 pair 2 pairs

H. D. 1 right 2 wrong