What Is the Use of Symbol * in the Control

Multiple Choice

What is the use of symbol * in the control string as shown [=%[*][width] [modifiers] type=]?

A) * is optional and used when the data should be read from the stream but ignored
B) * is not optional, used to read data from the stream but it is not ignored
C) * is not optional, it is used to read data stream but ignored
D) * is optional and used to read data from stream but it is not ignored