Concept: Cooperative cataloguing means sharing cataloguing work among libraries to avoid duplication and save time.
Step 1: Check Inter-Library Loan.
Inter-library loan is closely connected with library cooperation and shared bibliographic records.
\[
A = \text{Related}
\]
Step 2: Check Union Catalogue.
Union catalogue is a major product of cooperative cataloguing. It shows holdings of many libraries together.
\[
C = \text{Related}
\]
Step 3: Check Preparation of Bibliographies.
Preparation of bibliographies can be done cooperatively by libraries and information centres.
\[
E = \text{Related}
\]
Step 4: Reject unrelated options.
Reading awareness and unique user ID are not standard areas of cooperative cataloguing.
Therefore, the correct answer is:
\[
A,\ C,\ E
\]