A builder raises $30$ bricks from the ground up to a platform that is $2.0\,\text{m}$ above the ground. Each brick has a mass of $4.0\,\text{kg}$. How much work is done against gravity by the builder in moving the bricks onto the platform?
- A$80\,\text{J}$
- B$120\,\text{J}$
- C$240\,\text{J}$
- D$2400\,\text{J}$