题目：
Which of the following is NOT an advantage of exchange traded funds (ETFs) over traditional mutual funds（）
A. ETF shares trade throughout the day at continuously updated prices, while open-end funds trade only once a day at close-of-market prices.
B. The exposure to capital gains taxes is lower for ETFs than for open-end funds.
C. ETF shares have smaller bid-ask spreads than open-end mutual funds.
答案：
参考答案：C
解析：
ETF shares do trade continuously throughout the day, unlike shares of open-end funds. Investors in ETFs do have lower capital gains liabilities than investors in open-end funds because of ETF’s in-kind redemption feature. Because of the in-kind creation/redemption process of ETFs, new shares will be issued or redeemed in accordance with investor demand, thus eliminating any significant discount or premium. Because ETF shares trade on the open market, the shares are subject to a bid-ask spread, while open-end funds trade at NAV and are not subject to a bid-ask spread.
