T1 and T3 refer to international telephone standards for digital communication

Which of the following is common in today's data centers?

A. redundant/backup power supplies B. environmental controls C. data communication connections D. all of the above

If investors speculate in derivative contracts rather than in the underlying asset, they will probably achieve ____ returns, and they are exposed to relatively ____ risk

a. lower; lower b. lower; higher c. higher; lower d. higher; higher