Which iconic military survival tool was originally created in 1891 to supply the Swiss Army with a compact, multi-functional knife but later became a global brand phenomenon?

In the realm of military equipment, certain products have transcended their original purpose to become legendary. One such item began as a humble utility knife for soldiers and evolved into a cultural icon recognized worldwide. This poll tests your knowledge of military product brand evolution and how a specific company's creation became synonymous with rugged reliability in both military and civilian sectors. Do you know which famous product has equipped soldiers from WWII to modern conflicts while simultaneously becoming a civilian outdoor essential?

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The Swiss Army Knife by Victorinox, which didn't achieve global recognition until after WWII when American soldiers brought them home as souvenirs
The Ka-Bar combat knife, which was first distributed to Marine Corps troops in 1942 before becoming a popular civilian hunting knife brand
The Leatherman multi-tool, originally developed in 1975 for the U.S. Army before becoming a commercial success in the 1980s
The Gerber Mark II combat knife, first issued during Vietnam and later marketed to civilians as the first modern tactical knife brand