In any decision-making process, it is important for the manager to gather the correct information which will include certain 'management accounting terms' that are needed before any short term decisionmaking can be done. In line with this, distinguish the following terms with examples or illustrations in a short-term decision-making context: a) Relevant costs and Irrelevant costs. (13 marks) b) Avoidable and unavoidable costs. (6 marks) c) Controllable and uncontrollable costs. (6 marks) (Total: 25 marks)