单选题 An analyst does research about index investing. The rationale for investing in index funds least likely includes the ability to:
A. diversify the investments.
B. reduce the cost of investing.
C. capture arbitrage opportunities.

【正确答案】 C
【答案解析】[解析] 投资指数基金的目的主要是为了减少投资成本和交易成本，或者进行分散化投资，最不可能是捕捉套利机会。