The following four wires are made of 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 `=1mm`
C. Length `= 200 cm`, diameter `= 2mm`
D. Length `= 300 cm`, diameter `= 3mm`