In Its Development, the SCOR Model Incorporated Four Groups of Practices

In its development, the SCOR model incorporated four groups of practices for the Make process.Among the following possible choices, find the correct groups of which there could be more than two.
1) S&OP process
2) Lean manufacturing
3) Human resource management (HRM)
4) SPC

A) (3)
B) (3) and (4)
C) (1) and (2)
D) (1) , (2) and (3)