以下不能正确创建输出文件对象并使其与磁盘文件相关联的语句是

A．ofstream myfile;myfile.open("d:ofile.txt");

B．ofstream*myfile=new ofstream;myfile-＞open("d:ofile.txt");

C．ofstream myfile("d:ofile.txt");

D．ofstream*myfile=new("d:ofile.txt");