Which&ensp；can&ensp；be&ensp；used&ensp；to&ensp；encode&ensp；charS&ensp；for&ensp；output？（）

A.  Java.io.OutputStream.

B.  Java.io.OutputStreamWriter.

C.  Java.io.EncodeOutputStream.

D.  Java.io.EncodeWriter.

E.  Java.io.BufferedOutputStream.