Which of these consumer products, originally developed for military use during WWII, revolutionized American retail and shopping behavior when introduced to civilian markets in the late 1940s?

Throughout history, military necessity has driven innovation in food preservation and packaging that later transformed civilian consumer markets. Many products we use daily originated from military research and development. This poll explores how a famous consumer product with military origins changed retail patterns and consumer behavior when it entered the civilian market after World War II.

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Instant coffee (G. Washington's prepared coffee)
Frozen orange juice concentrate (developed under Project SCOOP)
Aerosol spray cans (bug bombs for malaria prevention)
M&M candies (heat-resistant chocolate for rations)