Refer to the exhibit. You are setting up a 2-gigabit EtherChannel. Following IEEE standards, the exhibit shows your configuration in a local switch1. However, EtherChannel is not coming up. Which one of these statements could be a possible reason?()<br /> <img src="https://nimg.ppkao.com/2018-07/yiyu/2018072409004052801.jpg?sign=0749ea70eaa7fc0171dd20939301c67e&t=62d310ab" />
A、 EtherChannel is only available in Cisco equipment.
B、 The customer side is supposed to be running PAgP, which is a Cisco standard.
C、 PAgP is not an IEEE standard. VRRP should be used.
D、 The configuration on switch1 needs to be modified to use LACP.