Potential difference and power — practice question

Which unit combination could be used to express the power dissipated in a resistor?

• Anewton per second ($\text{N s}^{-1}$)
• Bnewton second ($\text{N s}$)
• Cnewton metre ($\text{N m}$)
• Dnewton metre per second ($\text{N m s}^{-1}$)