If the arithmetic mean of 0, 5, 4, 3 is a, that of -1, 0, 1, 5, 4, 3 is b and that of 5, 4, 3 is c, then the relation between a, b, and c is
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1] a = b = c
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2] a : b : c = 3 : 2 : 4
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3] 4a = 5b = c
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4] a + b + c = 12
Solution
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