SI units — practice question

Which two units are not equal to one another?

• A$\text{N m}$ and $\text{kg m}^2\text{ s}^{-2}$
• B$\text{N s}$ and $\text{kg m s}^{-1}$
• C$\text{J s}^{-1}$ and $\text{kg m}^2\text{ s}^{-3}$
• D$\text{Pa}$ and $\text{kg m s}^{-2}$