| How is the lube oil temperature controlled in the pressurized lube oil system shown in the illustration? |
| A) Sea water flow through the cooler is adjusted by opening or closing the inlet valve. |
| B) A thermostatic valve diverts sea water flow around the cooler. |
| C) A thermostatic valve sensor determines temperature downstream of the L.O. coolers and the valve diverts lube oil flow through or around the cooler accordingly. |
| D) Lube oil flow through the cooler is adjusted by changing the speed of the lube oil pump. |
