23-If Forward Chaining is used and assuming that the following initial facts is given (TRUE) in the knowledge-base: A, B, C, D. (8 points) Specify in what order the following rules will be applied (matched) and as a result in what order new facts will be added to the Knowledge-base. Rule 1: IF Y is true AND D is true THEN Z is true Rule 2: IF C is true THEN E is true Rule 3: IF X is true AND B is true AND E is true THEN Y is true Rule 4: IF A is true THEN X is true