Which two actions do you suggest to fix this issue?

Q53.A university has hired you as a consultant to advise them on the best method to prevent DHCP starvation attacks in the campus. They have already implemented DHCP snooping and port security to control the situation but those do not fully contain the issue.

Which two actions do you suggest to fix this issue? (Choose two.)
A . Use the ip dhcp snooping limit rate command on trusted and untrusted interfaces set to the rate same value
B . Use the ip dhcp snooping limit rate command only on untrusted interfaces and set the rate to suitable calues that are relevant to the interface
C . Use the ip dhcp snooping verify mac-address command to ensure that the source MAC address in the DHCP request matches the client hardware address (CHADDR) sent to the DHCP server.
D . Use the ip dhcp snooping limit rate command on Trusted and Untrusted interfaces and set the rate to suitable values that are relevant to each interface respectively.
E . Use the ip dhcp snooping limit rate command only to ensure that the source MAC address in the DHCP request matches the client identifier (CLID) field sent to the DHCP server.

Answer: CD