The use of the barcode, or Universal Product Code, which was created in part to enable supermarkets to process customers at a faster rate, has expanded beyond supermarkets to other retail outlets andhave become readily accepted despite some initial opposition when it was first introduced in 1974.
A)have become readily accepted despite some initial opposition when it was first introduced in 1974
B)has become readily accepted despite some initial opposition whenthey were first introduced
...
A)have become readily accepted despite some initial opposition when it was first introduced in 1974
B)has become readily accepted despite some initial opposition whenthey were first introduced
...
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