Two wires A and B are of the same material. Their lengths are in the ratio of 1:2 and diameter are in the ratio of 2:1. If they are pulled by the same force, their increase in length will be in the ratio.

2:1

2:1

0%

1:4

1:4

0%

1:8

1:8

0%

8:1

8:1

0%