Cold water enters an electric shower at $17^{\circ}\text{C}$. Each second, the shower transfers $6000\,\text{J}$ of energy to the incoming water and raises its temperature to $37^{\circ}\text{C}$. The specific heat capacity of water is $4200\,\text{J (kg}^{-1}\,^{\circ}\text{C}^{-1})$. What mass of hot water does the shower deliver in one second?
- A$0.035\,\text{kg}$
- B$0.039\,\text{kg}$
- C$0.071\,\text{kg}$
- D$0.084\,\text{kg}$