User Jsmith is a member of the Accounting and Contractor groups, and is trying to save a file to Folder A on his local computer, but finds he has no access. Upon investigating, you discover the Accounting group has Full Control over Folder A, but the Contractor group has been denied all access to the folder. What Jsmith's effective access?

A. Because the two groups have opposite levels of access, the two cancel out and Jsmith is left with only read permissions.
B. Jsmith's membership in the Contractor group means that he has been denied all access to the folder.
C. Jsmith's membership in the Contractor group limits him to read and execute permissions.
D. Jsmith's membership in the Contractor group allows him to edit files in the folder only after he takes control of the folder using the Accounting group permissions.

Answer: B