The following four wires are made of the same material. Which of these will have the largest extension when the same tension is applied?

1. A. Length = 50 cm, diameter = 0.5 mm
2. B. Length = 100 cm, diameter = 1 mm
3. C. Length = 200 cm, diameter = 2 mm
4. D. Length = 300 cm, diameter = 3 mm

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