A 10 kg solid at $$100^\circ C$$ with a specific heat of $$0.8 kJ/kg^\circ C$$ is immersedin 40 kg of $$20^\circ C$$ liquid with a specific heat of $$4.0 kJ/kg^\circ C$$ The temperature of the solid after a long time if the container is insulated will be

A

$$30.8^\circ C$$

B

$$27.8^\circ C$$

C

$$26.3^\circ C$$

D

$$23.8^\circ C$$