If a three digit ABC is divisible by 3, then () A．a－b＋c B．abc C．a＋b－c D．a＋b－2012c

Choose D
a＋b－2012c=（a+b+c）-2013c
ABC is divisible by 3
A + B + C is a multiple of 3
2013c is a multiple of 3
A + b-2012c = (a + B + C) - 2013c is a multiple of 3

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