Which of the Following Problems Could Not Be Addressed by Using

Which of the following problems could not be addressed by using compounding or discounting techniques?

A) Finding an amount to be invested today to provide a given level of income during retirement
B) Determining how long it should take the population of China to double
C) Finding the growth rate in a firm's dividend payments
D) Calculating the length of time needed for the supply and demand for lendable funds to equate if interest rates are above the equilibrium level
E) Deciding whether a bank paying interest compounded annually is giving you a better deal than a rate that compounds daily