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

a. data-File(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

b. dataFile.open("info.dat", ios::out | ios::app);