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?()<img src="https://nimg.ppkao.com/2018-07/lina/2018072409414459887.jpg?sign=4819286a8c504f9e3ce5233826e7b1c0&t=62d1d7e1" />
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.