What all are the steps to perform -To enable type-ahead for an input field on a screen? There are 3 correct answers to this question.

What all are the steps to perform -To enable type-ahead for an input field on a screen? There are 3 correct answers to this question.
A . Process on all the input fields
B . Automatic updates of all the input fields
C . Check Pre-Requisites
D . Identify Elementary Search Help
E . Switch on proposal search for input fields

Answer: C,D,E