What command can Charlie use to attempt this task?

Charlie is the network administrator for his company. Charlie just received a new Cisco router and
wants to test its capabilities out and to see if it might be susceptible to a DoS attack resulting in its
locking up. The IP address of the Cisco switch is 172.16.0.45. What command can Charlie use to
attempt this task?

A.
Charlie can use the commanD. ping -l 56550 172.16.0.45 -t.

B.
Charlie can try using the commanD. ping 56550 172.16.0.45.

C.
By using the command ping 172.16.0.45 Charlie would be able to lockup the router

D.
He could use the commanD. ping -4 56550 172.16.0.45.