问题：

[单选] Which scenario describes an appropriate use for opening a form in a new session?（）

A . The data entered into the called form is logically independent of the data entered in the calling form. 
B . The called form requires different privileges than the calling form. 
C . The called form must execute as a different user than the calling form. 
D . The calling form must be able to query data in the called form before it is saved.