On the switch, which VLANs can be deleted by using the undo command? (Multiple choice)

The output information of the sub-interface of a router aggregate port 1 is shown in the figure. Based on this information, which of the following statements are correct? (Multiple Choice)
[Router A]display Interface Eth-Trunk 1.100
Eth-Trunk1.100 current state : UP
Line protocol current state : UP
Last line protocol up time : 2019-03-04 10:22:40 UTC -08 :00
Description: HUAWEI, AR Series, Eth-Trunk1.100 Interface
Route Port, Hash arithmetic : According to SIP-XOR-DIP, Maximal BW: 2G, Current BW: 2G, The Maximum Transmit Unit is 1500
Internet Address is 10.0.12.2/24
IP Sending Frames' Format is PKTFIT ETENT 2.Hardware address 1s 00e0-fc3b-2015
Current system time: 2019-03-04 10:24:29 -08:00
Last 300 seconds input rate 0 bits/sec, 0 packets/sec
Last 300 seconds output rate 0 bits/sec, 0 packets/sec
Realtime 0 seconds input rate 0 bits/sec, 0 packets/sec
Realtime 0 seconds output rate 0 bits/sec, 0 packets/sec
Input: 6 packets, 574 bytes,
Output:7 packets, 638 bytes,
Input bandwidth utilization ;0%
Output bandwidth utilization :0%
--------------------------------
PortName Status Weight
--------------------------------
GigabitEthernet0/0/1 UP 1
GigabitEthernet0/0/2 UP 1
--------------------------------
The Number of Ports in Trunk : 2
The Number of UP Ports in Trunk : 2

If the value of the Type/Length field of an Ethernet data frame is 0 x 0800, the length of the upper layer message header carried by this data frame is in the range of 20-60B.

If the transport layer protocol is UDP, the value of the network layer Protocol field is 6.

On Huawei AR G3 routers, what is the -i parameter of the Ping command in VRP used to set?