You are approaching a drawbridge and have sounded the request-for-opening signal. The bridge has responded with five short blasts. How would you respond?

Correct Answer: Option C — Any of these signals is considered a valid response

When a bridge operator signals a refusal via five short blasts, 33 CFR 117.15 allows for multiple methods of acknowledgment. The vessel may confirm the signal via radiotelephone, visual signals like a white flag, or by repeating the five short blasts to ensure clear communication of intent.