Bischoff Enterprises leases office space from Kally-Mack Properties for a term of 30 year's. The office space that is available will permit the use of existing office equipment and computer equipment. ln addition, Kally-Mack will deliver all maintenance services for all items of equipment, including the maintenance of the building (elevator service, window cleaning, and copy machine repairs). The maintenance is included in the annual lease payments. The lease components in this agreement are:

a. Office space

b. Office space and all equipment (office and computer)

c. Office space, office equipment and computer equipment

d. Office space, office equipment, computer equipment and maintenance.