How much work can a 23,000 watt car engine do in 35 seconds if it is 100% efficient?

The power (P) is defined as the work done by the engine per unit of time:

Where W is the work and t the time. If the efficiency of the engine is 100% (like in this case), all the work done is converted into useful power, so we can use the previous equation. By rearranging it and by plugging in the numbers (P=23000 W and t=35 s), we can find the work done by the car engine:

Iam pretty sure its b but if im wrong sorry