Subnetting question

The question is "Which subnet do I find this IP adress in?": 172.16.100.100/26

My current answer:

Subnet 2 (4 subnets (or 1024? not sure if 10 bits should be used since it's /26 but also Class B) and 62 hosts per subnet; Subnet 2 range=192.168.100.64 – 192.168.100.127)

Class B (based on the 172.16. network ID)

Net mask binary: 11111111.11111111.11111111.11000000 / decimal: 255.255.255.192

Block size: 256-192=64

Subnet table:

172.16.100.0 – 172.16.100.63

172.16.100.64 – 172.16.100.127

172.16.100.128 – 172.16.100.191

172.16.100.192 – 172.16.100.255

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Thanks.