The correct option is B JkgoC
In SI, the specific heat of a solid (or liquid) may be defined as amount of the heat required to raise the temperature of 1 kg of the solid (or liquid) through 1 k (or 1oC)
∴ Specific heat =Qmδt
=unit of heatunits of mass * unit of temperature
∴ Units of specific heat =JkgoC