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