What are two differences between media flow-around and media flow-through on cisco unified Border element? (Choose two.)

What are two differences between media flow-around and media flow-through on cisco unified Border element? (Choose two.)
A . When using media flow-through, the call signaling and media are passed through the Cisco Unified Border Element
B . When using media flow-through, the call signaling goes through the Cisco Unified Border Element, but media is not passed through it.
C . When using media flow-around. the call signaling goes through the Cisco Unified Border Element, but media * not passed through it
D . When using media flow-around, both call signaling and media do not go through the Cisco Unified Border Element
E . When using media flow-through, call signaling goes through the Cisco Unified Border Element but media does not

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Answer: A,C