How many pairs are usually in a Cat5 or Cat6 network cable?

How many pairs are usually in a Cat5 or Cat6 network cable?

• 6 pair
• 8 pair
• 2 pair
• 4 pair 

EXPLANATION

Usually cat5 or cat 6 cable is 4 pair package.

SOURCE

https://community.spiceworks.com/topic/258905-in-network-cable-4-pair-of-wire-is-there-only-2-pair-is-used-why-other-2-pair