<s>[INST] Checking for market trends in options data can be useful for speculating on short-term price movements in the underlying stock.

Support for this statement comes from the fact that:

I. Options prices reflect market expectations about the price of the underlying stock.

II. Some researchers have found that trading based on large, one-day changes in options prices have been profitable in a subset of cases.

Which of the statements supports the initial claim?[/INST]