Lightening conductors are used to protect building from lightning strikes. Which of the following statements is/are true about lightening conductors?

1) Lightening conductors create an electric field at its top that lightning strikes it preferentially

2) Lightning conductors reduce the effect of the strike by uniformly distributing the charge (current) over the surface of the building

3) Lightning conductors take all the charge (current) to deep down in the earth

4) Lightning conductors must be installed at a place taller than the building

Select the correct answer using the code given below