The boy read the article ________ and found something important in it. [ ]

A. careful enough

B. carefully enough

C. enough careful

D. enough carefully

有如下语句序列：
int arr[2][2]=9,8,7,6;
int *p=arr[0]+1; cout＜＜*p＜＜endl;
运行时的输出结果是______。