During World War II, what revolutionary supply chain innovation allowed Allied forces to transport fuel across the English Channel after D-Day?

Throughout military history, supply chains have often determined the outcome of wars as much as tactics or bravery. From Napoleon's famous quote that 'an army marches on its stomach' to modern logistical operations, the ability to supply forces with food, ammunition, and equipment has been crucial. This poll tests your knowledge about one of history's most significant military supply chain innovations that revolutionized warfare during World War II.

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Operation PLUTO (Pipe Lines Under The Ocean) - underwater pipelines that pumped fuel directly to advancing forces
The Liberty Ship Program - mass-produced cargo vessels that could be assembled in under a week
Red Ball Express - a convoy system of trucks that created a continuous supply line from ports to the front
Operation Mulberry - artificial floating harbors towed across the Channel for rapid unloading of supply ships