Please help to determine which of them True or False and why is that.

a) Because hedge funds often use market neutral strategies (e.g. pairs trading), the risk-free rate is the best benchmark to use for hedge fund evaluation.

b) Statistical arbitrage always generates a positive trading prot.

c) The publicly available data for the analysis of the performance of the average mutual fund is superior to the publicly available data for the analysis of the performance of the average hedge fund.