A water heater is joined to a $230\,\text{V}$ supply, and the current in the heater is $26\,\text{A}$. The water takes $20$ minutes to reach the temperature required. What amount of energy is delivered by the heater?
- A$6.0 \times 10^3\,\text{J}$
- B$1.0 \times 10^4\,\text{J}$
- C$1.2 \times 10^5\,\text{J}$
- D$7.2 \times 10^6\,\text{J}$