The following four wires are made of the same material. Which of these will have the largest extension when the same tension is applied?
A. Length `= 50 cm`, diameter `= 0.5 mm`
B. Length `100 cm`, diameter `=1`
C. Length `= 200 cm`, diameter `= 2 mm`
D. Length `= 300 cm`, diameter `= 3 mm`