To lift a load of 100 kg a distance of 1 m an effort of 25 kg must be applied over an inclined plane of length 4 m. what must be done to lift the load 2 m, using the same effort?

a.use an inclined plane of length 8 m.

b.use an inclined plane of length 2 m.

c.use an inclined plane of length 10 m.

d.use an inclined plane of length 16 m.