What is the retention requirement for Cortex Data Lake sizing?

What is the retention requirement for Cortex Data Lake sizing?
A . number of endpoints
B . number of VM-Series NGFW
C . number of days
D . logs per second

Answer: C

Explanation: https://docs.paloaltonetworks.com/cortex/cortex-data-lake/cortex-data-lake-getting-started/get-started-with-cortex-data-lake/set-log-storage-quota