There is an Azure Data Lake Storage Gen2 in your Azure Subscription. There is a requirement to implement access control to the ADLS service.After some research, your team has come up with 3 conclusions. You need to review these statements. 
Statement 1: ADLS Gen2 supports Azure RBAC (role-based access control). 
Statement 2: ADLS Gen2 supports Posix like access control lists (ACLs). 
Statement 3: ACLs don’t apply to SAS (Shared access signature ) users.
Choose the right option.

Answer options:

A.Allstatements are incorrect.
B.All statements are correct.
C.Statement 1 is correct, statement 2 and 3 are incorrect.
D.Statement 2 is correct, statement 1 and 3 are incorrect.
E.Statement 3 is correct, statement 2 and 1 are incorrect.

Correct Answer: B
All three statements are correct. ADLS Gen2 supports Azure RBAC and Posix like ACLs. But in the case of SAS, it is not a valid option since ACLs are applied to the users in the same tenant.SAS is generally used by users in different tenants or for general/public access.
Reference: 
To know more, please refer to the docs below: 

https://docs.microsoft.com/en-us/azure/storage/blobs/data-lake-storage-access-control#common-scenarios-related-to-acl-permissions