portion

alright guys,
i had a CEL light on for a while and these codes came up

P0125 - Insufficient Coolant Temperature For Closed Loop Fuel Control
P0130 - HO2S Circuit Malfunction, Bank 1 Sensor 1
P0133 - HO2S Circuit Slow Response, Bank 1 Sensor 1

code ..130,133 i figure are a bad O2 sensor for bank 1 sensor 1.
can u guys tell me which one this is?
i can see an O2 sensor right on the exhaust manifold and theres one lower down closer to the fire wall below.
Which one is bank 1?

also can anyone tell me if this would cause the PO125 code? or that is something else?
thanks alot guys