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When pulling a set of doubles or triples, which unit is most likely to turn over, and why?
A
The tractor, because it carries the greatest share of the weight
B
The first trailer, because it absorbs the full force of the turn
C
The last trailer, because of the "crack-the-whip" effect caused by rearward amplification
D
All units equally, since they are coupled together and share the same load