Distortion of the spray pattern of a nozzle or injector may be indicated by a／an________.A

Distortion of the spray pattern of a nozzle or injector may be indicated by a/an________.

A.high firing pressure

B.overload of that particular cylinder

C.smoky exhaust

D.cooling water temperature rise

请帮忙给出正确答案和分析，谢谢！