Which of the following is suitable as a description of TCO (Total Cost of Ownership)?
a) TCO is the total sum of costs paid by a user who monopolistically implements a database on a system.
b) TCO is the total sum of information system costs from installation through maintenance and management.
c) TCO is the total sum of software costs from planning through maintenance.
d) TCO is the total sum of equipment and software costs paid by the user in purchasing personal computers.