INLAND ONLY Vessels "A" and "B" are meeting on a river as shown in illustration D029RR below and will pass about 1/4 mile apart. Which statement is TRUE?

Correct Answer: Option D — The vessels should exchange two blast whistle signals and pass starboard to starboard.

Inland Rule 34(a) requires vessels meeting within half a mile to exchange whistle signals. Two short blasts indicate an intention to pass starboard-to-starboard. If both vessels agree, they must exchange the two-blast signal to confirm the maneuver, ensuring both masters are aware of the passing arrangement.