I have repeatedly attempted to answer a question in the IP Addressing section of the Introduction to Networking course, but have been unable to get the correct answer. The question is asking me to find the network address of 172.16.24.10/20. The answer I keep coming up with is 172.16.16.0/20, but that keeps coming up as incorrect. The question says that you can answer in dotted decimal or CIDR notation. It would be great if I could get some help to explain where I am going wrong.