Which of the following activities are responsibilities of a Supplier Manager?

1. Negotiating and agreeing Contracts
2. Updating the Supplier and Contract database
3. Planning for possible closure, renewal or extension of contracts
4. Managing relationships with internal suppliers

A.
1, 2 and 3 only

B.
1, 3 and 4 only

C.
2, 3 and 4 only

D.
None of the above