Momentum — practice question

A body has a mass of $20\,\text{kg}$. Its velocity changes from $6\,\text{m s}^{-1}$ to $10\,\text{m s}^{-1}$. Which impulse acted on the body?

• A$80\,\text{N s}$
• B$120\,\text{N s}$
• C$200\,\text{N s}$
• D$320\,\text{N s}$