What Is True About the Following Statement

Multiple Choice

What is true about the following statement?
Out) open("values.dat", ios:
:
App) ;

A) If the file already exists, its contents are preserved and all output is written to the end of the file.
B) If the file already exists, it should be replaced with a new copy of values.dat.
C) If the file already exists, it can be opened but not modified.
D) None of these