i would guess looking at the bclass 1.3 b180 sport for example it would be for wpms.
1.3 b180 sport ap £74
1.3 b180 sport plus exec pack £1898.71
1.3 b180 sport plus premium pack £2648.70
1.3 b180 amg £297
1.3 b180 amg exec £848.71
1.3 b180 amg prem £1048.71
or if were really lucky its premium and premium plus but i wouldnt hold my breath.
best bet would be a call to mota.