【单选题】
A <{p}>they have to move every five years(because of their work<{br/}><{/p}>
B <{p}>they cannot ignore the tradition inherited from their ancestorsk<{br/}><{/p}>
C <{p}>they cannot find a stable job so they move from time to timek<{br/}><{/p}>
D <{p}>Ahey often have business trips and travel for breaks from work<{br/}><{/p}>
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