Businesses Typically Have Many Systems, Some Internally Developed, Some Purchased

Businesses typically have many systems, some internally developed, some purchased, and others acquired. Businesses want these systems to communicate with one another and provide users with easier access to data. There are three systems configurations that consolidate and coordinate data across multiple locations. These three include centralized systems, decentralized systems, and distributed systems. Each configuration has advantages and disadvantages. Which of the following is an advantage of distributed systems?

A) Cost is lower, as there is only one central location to be maintained.
B) Reduction in processing bottlenecks as employees aren't competing for processing power.
C) Real-time transaction details are more readily available to users. Access and processing speed are faster because processing workload is spread across the system.
D) If one system fails, the other systems can still process transactions.