One of the main benefits to hard assets such as gold, silver, and natural resources is:

Select one: a. Very little record keeping is necessary with these type of assets b. They are guaranteed to always go up in value c. Given their historical price trends, they tend to be a fairly good hedge against inflation d. Due to their negative correlation with the stock market, they are a good hedge against the expected long term trend of the stock market e. The cost of storing them is much lower than the costs of keeping financial assets