Which of the following statements is true? a. manufacturing overhead costs are accumulated in cost pools and then assigned to products. b. indirect costs must be allocated based on a single plant wide rate. c. managers cannot wait until the end of the accounting period for product cost information. d. managers can choose to wait until the end of the accounting period to allocate manufacturing overhead costs.

You wish to retire in 13 years, at which time you want to have accumulated enough money to receive an annual annuity of $23,000 for 18 years after retirement. during the period before retirement you can earn 9 percent annually, while after retirement you can earn 11 percent on your money. what annual contributions to the retirement fund will allow you to receive the $23,000 annuity? use appendix c and appendix d for an approximate answer, but calculate your final answer using the formula and financial calculator methods.