Duration,as Referred to in the Chapter,is

Duration,as referred to in the chapter,is:

A) ameasure of the extent to which different investments expose an investor to interest rate risk.
B) ameasure of the weighted-average time required before all principal and interest is received on an investment.
C) ameasure that takes into account both the size of cash flows and the timing of their receipt.
D) allof the above.