18.
(4分)根据下面的定义,能打印出字母“M”的语句是( )struct person{char name[9];int age;};struct person class[10]={.John.,17,.Paul.,19,.Mary.,18,.adam.,16 };

A. printf(.%c\n.,class[3].name)
B. printf(.%c\n.,class[3].name[l])
C. printf(.%c\n.,class[2].name[l])
D. printf(.%c\n.,class[2].name[0])