Conventional wisdom doesnt like the idea of ban on short sale. It argues that the short sale ban will 1. artificially ________ (increase or decrease) the prices of the banned stocks in the ban period and the stock prices of the banned stocks will ______ (increase or decrease) in the post-ban period. 2. _________ (increase or decrease) the liquidity of the banned stocks in the ban period. 3. _________ (increase or decrease) the volatility of the banned stocks in the ban period.