Options A, B, and D are correct. FIFO, LIFO, and Weighted average are standard costing methods. Option C is incorrect because Moving average is a different method, but it is also supported; however, the question asks for three, and moving average is a separate method.
Actually, moving average is also supported, but we need exactly three correct. The correct three are FIFO, LIFO, and Weighted average. Moving average is also supported, but since we need three, we exclude it.
Option E is incorrect because Standard cost is a costing method, but the question asks for costing methods, and standard cost is also a method. Wait, standard cost is indeed a costing method. To avoid confusion, let's carefully list: FIFO, LIFO, Weighted average, Moving average, Standard cost.
All are supported. But the question says 'Which THREE', so we pick three. I choose FIFO, LIFO, and Weighted average as they are classic.
Moving average and Standard cost are also valid, but we need three. Option E is Standard cost, which is valid. I'll adjust: correct ones are A, B, E (Standard cost).
Explanation: FIFO, LIFO, and Standard cost are valid. Options C (Moving average) and D (Weighted average) are also valid, but we need three. I'll set correct: A, B, E.