Walmart Reduced Waste in Packaging by 3,500 Tons by __________

Walmart reduced waste in packaging by 3,500 tons by __________.

A) purchasing more merchandise from U.S. manufacturers
B) requiring its toy suppliers to trim one square inch of packaging from their lines
C) shipping with airline carriers which provide superior handline
D) identifying products that can be shipped without packaging materials
E) using natural gas-powered delivery vehicles that reduce emissions