单选题 In the following equation, a, b and c each represents a single digit respectively.S=abc+cab+bca, where a, b, and c are all positive integersQuantity A: SQuantity B: 111(a+b+c)

A、 Quantity A is greater.
B、 Quantity B is greater.
C、 The two quantities are equal.
D、 The relationship cannot be determined from the information given.

【正确答案】 C

【答案解析】S=abc+cab+bca=100a+10b+c+100c+10a+b+100b+10c+a=111(a+b+c)两者相等，选择C。