[AAA co. offered zero-coupon bond with face value of $1,000 for sale to public on Jan 1, 2021, maturing Dec 31, 2041 Investors paid SSS $100 for the security; so they gave up $100 on Jan 1, 2011, for the promise of a $1,000 payment 20 years later. Is this deal reasonable? (You need to consider both from seller's and buyer's point of view.) Which factor affects the desirability of the deal for the seller and buyer?