INLAND ONLY One and two short blast signals must be sounded on inland waters when __________.

A
two sailing vessels are in sight of one another and meeting at a distance of one quarter mile
B
two power-driven vessels are in sight of one another and will cross at a distance of one mile
C
two power-driven vessels are crossing within half a mile of each other and NOT in sight of each other
D
Two power-driven vessel are in sight of one another and are meeting at a distance of one half mile
E