In Huawei FusionCompute, which statement is correct about management roles?
A . A "role" can have one or more different "operation rights"
B . A "user" can only have one "role"
C . If a "user" has multiple "role", the "operational authority" it has will depend on the priority of the best "role"
D . "Operating rights" of "Role" cannot be modified
Answer: A