A drop of water breaks into 2 droplets of equal size. In this process which is appropriate?

1. Sum of Temperature of the 2 drops= Temperature of the original drop

2.The sum of masses of the 2 drops= Radius of  the original Drop

3.The sum of the radii of the 2 drops = Radus of the original drop

4.The sum of surface areas of the 2 droplets = surface area of the original drop

sum of the masses of the two drops=mass of the original drop.

give rates

bcoz volume remains constant