Assume variables str1 and str2 are declared and initialized like this: char str1[8], str2[8]="good". Which of the following could not be used to copy the contents of str2 into str1? Select one:
a. strcpy(str1, str2)
b. str1 = str2
c. str1[0] = 0; strcat(str1, str2)
d. strncpy(str1, str2, 6)
e. All of the above will copy the string
f. None of the above will copy the string