有以下程序： main() { char a='a', b; printf("% c, ",++a); printf("% c\n", b=a++); 程序运行后的输出结果是______。

A．b, b

B．a, b

C．b, c

D．a, c

When reporting to the surgeon that a chest tube is malfunctioning, the nurse is ordered to reposition the tube and obtain a chest radiograph. The nurse should（）

A. inform the surgeon this isn’t within her scope of practice.

B. report the surgeon to the Ethics Committee.

C. report the surgeon to the nursing supervisor.

D. follow the order as requested by the surgeon.