Which Statement Opens a File in Such a Way That

Multiple Choice

Which statement opens a file in such a way that information will only be written to the end of the file?

A) dataFile(open.append("info.dat") ;
B) dataFile.open("info.dat", ios::out | ios::app) ;
C) datFile.open = "c:\\info.dat" ios::append;
D) open(dataFile.append) ;
E) None of these