Which of the following units represents a valid unit of power?
kg⋅m2/s3\text{kg} \cdot \text{m}^2 / \text{s}^3kg⋅m2/s3
N⋅m/s\text{N} \cdot \text{m} / \text{s}N⋅m/s
J/s\text{J} / \text{s}J/s
All of the above