The role of commodities as a distinct asset class has increased significantly over the past few years and is expected to gain increasing importance in the future. If an investor wants exposure to commodity prices, the first thing he/ she might think is that he/ she should physically own commodities, but of course this is, in most cases, impractical. 

a) Critically discuss the benefits from investing in Commodities. 

b) Critically discuss alternative options for getting exposure on commodities.