【单选题】
定义一个指向片外RAM40H开始的无符号字节指针的语句是:()
A、unsigned char pdata*v=0x40;
B、unsigned char data*v=0x40;
C、unsigned char xdata*v=0x40;
D、unsigned char code*v=0x40;
A、unsigned char pdata*v=0x40;
B、unsigned char data*v=0x40;
C、unsigned char xdata*v=0x40;
D、unsigned char code*v=0x40;