As an experienced technician， you are responsible for Technical Support. Which of the followingdescriptions is correct about the characteristic of SLB one arm mode？（）

• A、 This out-of-band approach supports scaling
• B、 SLB· is not inline.
• C、 Mode is not as common as bridge or routed mode.
• D、 Return traffic requires PB·R， server default gateway pointing to SLB·， or client source NAT·