Which of the following statements is true of an index exchange-traded fund (ETF)?

Passive ETFs track an index and require minimal management, leading to lower expenses compared to actively managed ETFs.

D is correct because passive ETFs are cost-efficient and have lower fees.

A is incorrect because index ETFs have low turnover since they replicate an index.

B is incorrect because ETFs are priced continuously throughout the trading day.

C is incorrect as ETFs aim to match, not outperform, the index.