A: Skysong Company recently signed a lease for a new office building, for a lease period of 11 years. Under the lease agreement, a security deposit of $12,100 is made, with the deposit to be returned at the expiration of the lease, with interest compounded at 5% per year.

B: Concord Corporation, having recently issued a $20,009,700, 15-year bond issue, is committed to make annual sinking fund deposits of $608,900. The deposits are made on the last day of each year and yield a return of 10%.

C: Concord Corporation, having recently issued a $20,009,700, 15-year bond issue, is committed to make annual sinking fund deposits of $608,900. The deposits are made on the last day of each year and yield a return of 10%.

D: Under the terms of his salary agreement, president Chris Walters has an option of receiving either an immediate bonus of $55,000, or a deferred bonus of $70,000 payable in 10 years.