Which of the following is the correct order if calling functions in the below code?

1.2 Which of the following is the correct order if calling functions in the below code?
a = f1(23, 14) * f2(12/4) + f3();
A) f1, f2, f3
B) f3, f2, f1
C) Order may vary from compiler to compiler
D) None of the above