When designing a WAN that will be carrying real-time traffic, what are two important reasons to consider serialization delay? (Choose two.)
A . Serialization delays are variable because they depend on the line rate of the interface and on the type of the packet being serialized.
B . Serialization delay depends not only on the line rate of the interface but also on the size of the packet.
C . Serialization delays are invariable because they depend only on the line rate of the interface.
D . Serialization delays are variable because they depend only on the size of the packet being serialized.
E . Serialization delay is the time required to transmit the packet on the physical media.
Answer: BE