单选题Which statement about ATM AAL5 over MPLS is true？（）AIt supports ATM signaling.BIt supports traffic shaping of packets in MPLS to the ATM path.CIt supports ATM switched virtual circuitsDIt supports fragmentation and reassembly.EIt supports AAL5 SDU switching
单选题
Which statement about ATM AAL5 over MPLS is true？（）
A
It supports ATM signaling.
B
It supports traffic shaping of packets in MPLS to the ATM path.
C
It supports ATM switched virtual circuits
D
It supports fragmentation and reassembly.
E
It supports AAL5 SDU switching
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