Which of the following statements are correct regarding forms of precipitation?

(1) Rain is principle form of precipitation with size of raindrop larger than 0.5 mm and maximum size of rain drop is about 6 mm.

(2) Glaze is frozen raindrops which get frozen in their way.

(3) Sleet is water drops which freeze to form ice when it comes in contact with cold ground.

(4) Hail is showery precipitation in the form of lumps of ice of size more than 8 mm.

Which of the above statements are correct?