During a parenting group meeting, a mother reveals that she has observed her 6-year-old son playing with his penis during his bath. She asks the nurse how she should respond to the situation. What would be the nurse's most appropriate response

A．"Avoid characterizing it as bad because that's normal at his age. "

B．"If he does it often, you might consider disciplining him. "

C．"Ignore it and hope that he outgrows it. "

D．"Supervise his baths and encourage him to stop doing it. "

YC6LN-50系列气体发动机节气门位置传感器1电压超高限的故障原因可能是（）

A、对地短路

B、对电源短路

C、5V电压故障

D、传感器故障