Which one is wrong or not mentioned according to the following paragraph?

"Most of the shelf motors are built for a clean, dry, room temperature environment. A designer should consider a motor constructed for environmentally sensitive applications if the requirements of the project subject the motor to elements such as dust or water contamination. When choosing a motorambient temperature is also an important factor to take into consideration. Most of the motor windings are tested assuming that ambient temperatures will remain between 20C and 40C. The motor must be run at a derated, load to maintain the integrity of the insulation system over the life of the product if the application requires the motor to run at temperatures above 40C.

OA) At high temperatures, the electric motor may need to operate at a lower load.

OB) The operating environment can be important in the selection of an electric motor.

OC) The insulation system in the electric motor may be affected by the operating temperature.

D) Amblent temperature has no effect on motor selection.

The designer should pay attention to the selection of the engine for situations where it is sensitive to the working

environment