1. Some questions regarding commodity futures trading: a) How do you maintain a long (or short) position in commodity futures beyond maturity of a particular contract (for example, maintain a long position in crude oil futures after maturity of the current "front month" contract)? b) If you hold a long position and the futures price rises, would your margin account balance rise or fall? c) Is a moving average crossover strategy a trend-following strategy or a mean-reverting strategy? d) Is a Bollinger Band strategy a trend-following strategy or a mean-reverting strategy