Final answer:
Oscar will no longer be able to view the database because a deny overrides a grant.
Step-by-step explanation:
The statement that is true in this scenario is B. Oscar will no longer be able to view the database because a deny overrides a grant.When permissions are granted and denied to a user, the deny command takes precedence over the grant command. In this case, Nathan used the deny command to prevent Oscar from viewing the database, and since Oscar belongs to the group to which the deny command was applied, Oscar's ability to view the database is revoked.
Therefore, option B is the correct answer as the deny overrides the grant.