Imprudential, Inc., has an unfunded pension liability of $500 million that must be paid in 18 years. To ask ss the value of the firm's stock, financial analysts want to discount this liability back to the present. If the relevant discount rate is 6.0 percent, what is the present value of this liability? $175,171,896 $185.215.770 $161,158,144 $178,675,334 O $171,668,458