CFA mock 2012請教 - 金融分析師

Arbitrage activity will be higher in securities markets:


A that are efficient

B with no restriction on short selling

C with high information acquisition costs



解答給的是B


但B的意思不是short selling沒被限制 因此市場會比較有效率嗎?

比較有效率 pricing的 discrepency不是變少嗎

求高手解答~

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