Volvo V40 CC shock absorber marking
 

Hy everybody,
I'd like to replace the front shock absorbers of my MY15 V40CC.
So i opened Vida to obtain a part number only to discover that for my car I can choose between 5 different kind of shock absorber, divided for a marking that could be 1,4,12,11,13.
As per their information I should check on "vehicle details" to see what mark to choose, but there isn't any information there about such "mark".
For your info here there are the part numbers of left shock absorbers with their mark number.
Any suggestion about the right to pick up?
Thank you

31317921 marked 01
31317927 marked 04
31387747 marked 12
31387745 marked 11
31387749 marked 13