Q. The disadvantages of the error constants are:

• (A) they do not give the information of the steady state error when the inputs are other than the three basic types
• (B) error constant fail to indicate the exact manner in which the error function change with time.
• (C) they do not give information of the steady state error and fail to indicate the exact manner in which the error function change with time
• (D) they give information of the steady state error