The definition of 1 K as per the internationally accepted temperature scale is

A

$$\frac{1}{100}th$$ the difference between normal boiling point and normal freezing point of water.

B

$$\frac{1}{273.15}th$$ the normalfreezing point of water

C

100 times the difference betweenthe triple point of water and the normal freezing point of water.

D

$$\frac{1}{273.16}th$$ the normal freezing point of water