Four wires of same material and of dimensions as under are stretched by a load of same magnitude separately. Which one of them will be elongated maximum ?

[A] Wire of 1m length and 2 mm diameter

[B] Wire of 2m length and 2mm diameter

[C] Wire of 3m length and 1.5mm diameter

[D] Wire of 1m length and 1mm diameter

Answer & Explanation
Option: [C]