To accurately determine which option represents the information that would be included if the sentence were written in active voice, we would need to see the original sentence in passive voice. However, generally speaking, sentences written in passive voice often obscure the doer of the action. Therefore, if the focus were shifted to the subject performing the action in an active voice, the sentence would likely specify who is carrying out the action.
Based on this reasoning, the best option would be:
B. It would specify who inspected the wheels.