[j-nsp] Licenses needed for inline J-Flow

[Alex D.]

Hi,

i would like to use inline J-Flow on MX480 routers with a mix of 
MPC2E-NG and MPC7E-MRATE. I found the following licenses that might fit:
S-JFLOW-CH-MX480
S-ACCT-JFLOW-CHASSIS
S-ACCT-JFLOW-IN

I'm wondering which license i have to buy ? Can someone explain the 
differences ?

Regards,
Alex