____ in the woods, the two girls were frightened and kept crying. [ ]

A. Having lost

B. Lost

C. To be lost

D. Being lost

有以下程序：　　main(　)　　{　unsigned char a,b;　　　a=4|3;　　　b=4&3;　　　printf(“%d %d\n”,a,b(;　}　　执行后输出结果是（ ）。

A． 7 0

B．0 7

C．1 1

D．43 0