When all the factors of production are changed in same proportion, it is called as;
A. Long run production function
B. Law of equal proportion
C. Law of return to scale
D. Law of return to a factor
E. Law of Variable proportion
Choose the correct answer from the options given below:
1
A, B, C Only
2
B, C, D Only
3
C, D, E Only
4
A, C, E Only