What sensor to use with CUSL2 and MBProbe?

[Door Knob]

I was messing around with the settings and realized I forgot what sensor to use on for cpu heat detection. One gives me 30, one 40, and one 50. If anyone with this board and MBProbe could check what sensor I should be using I would greatly appreciate it.

[Door Knob]

BUMP....come on, someone has to have this...or another good temp prog.