Suppose that a stock portfolio and a bond portfolio have a zero correlation. This means that . A) the returns on the stock and bond portfolios tend to move inversely B) the returns on the stock and bond portfolios tend to vary independently of each other C) the returns on the stock and bond portfolios tend to move together

The procedures for reporting potential unanticipated problems involving risk to subjects or others to the irb are: stated in the human subject protection regulations, but not in the drug or device regulationsincluded in the consent processdetermined by research staffdetermined by the institution in its written policies and procedures