Arrange the following methods of delineating crop combination regions according to the year it was proposed (Old-New)
A. J.T. Coppock's Method
B. Rafiullah's Method
C. Doi's Method
D. J.C. Weaver's Method
Choose the correct answer from the options given below:
1
D, B, C, A
2
D, C, B, A
3
A, D, B, C
4
D, B, A, C