You work as an application developer at Certkiller .com. You would like to create a custom performance counter for an application that you created recently. 
To do this， you decide to create a custom category named ApplicationPerformance and a performance counter named HitNumber.You need to ensure that this counter is shared across numerous applications. What should you do？（）

A.Create the file by using a new FileStream object by passing the FileSecurity object as a parameter to the FileStream constructor.
B.Create a new FileSecurity object.
C.Apply the permissions by using the File class.
D.Create a new FileSystem Access Rule object for each permission that you need，and add each rule to the FileSecurity object.
E.Create a new FileSystem Audit Rule object and add it to the FileSecurity object.

A.A
B.B
C.C
D.D

A.Int32
B.UInt16
C.UInt32
D.Int16