在下列程序的空白处，应填入的正确选项是______。
import java. io. * ;
Public class writeInt
Public static void main(string[]a)
Int[]myArray=10,20,30,40);
try
DataOutputSystem dos=new DataOutputSystem
(new FileOutputSystem("ints. dat"));
for(int i=0; I＜MYARRAY. LENGTH. I++)
dos. writeInt(myArray[i]);
dos. ______;
System. out. println
("Have written binary file ints. dat");

Catch(IOException ioe)
System. out. println("IO Exception");

A．start()
B．close()
C．read()
D．write()