单选题Rule 14 describes the action to be taken by vessel meeting head-on. Which of the following conditions must exist in order for this rule to apply?（）.ABoth vessels must be power-drivenBThey must be meeting on reciprocal or nearly reciprocal coursesCThe situation must involve risk of collisionDAll of the above
单选题
Rule 14 describes the action to be taken by vessel meeting head-on. Which of the following conditions must exist in order for this rule to apply?（）.
A
Both vessels must be power-driven
B
They must be meeting on reciprocal or nearly reciprocal courses
C
The situation must involve risk of collision
D
All of the above
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