【单选题】
A <{p}>It began as a result of growing demand for fresh food.<{br/}><{/p}>
B <{p}>It began in response to the efforts of government<{br/}><{/p}>
C <{p}>It began as a movement against social in justice.<{/p}>
D <{p}>It began among under-privileged communities.<{br/}><{/p}>
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