Zeroth law of thermodynamics is not valid for the following

A

50 mlof water at $$ 25^\circ C$$ is mixed with 150 ml of water at $$ 25^\circ C$$

B

500 ml of milk at $$ 15^\circ C$$ is mixed with 100 ml of water at $$ 15^\circ C$$

C

5 kg of wet steam at $$ 100^\circ C$$ is mixed with 50 kg of dry and saturated steam

D

10 mlof waterat $$ 20^\circ C$$ is mixed with 10 ml of sulphuric acid at $$ 20^\circ C$$