Which of the following would be an appropriate loop header when reading data from a file to fill an array defined by:

float grades[MAX];

a) for (int i = 0; i < MAX; i++)
b) for (int i = 0; i < MAX –1; i++)
c) while (!fileIn.eof( ))
d) while (!fileIn.eof( ) && i < MAX)

d) while (!fileIn.eof( ) && i < MAX)