What does centralized nature of monolithic applications lead to?

What does centralized nature of monolithic applications lead to?
A . able to scale applications independently, independent application development and deployment, can use diverse technologies for application
B . able to scale out per module or per service
C . support agile software development, when we deploy new feature to existing monolith app only duration around 5 second for new traffic
D . In the lack of being able to scale applications independently, inter-application dependencies that hinder independent application development and deployment, reliability issues due to the centralized nature and the constraints on using diverse technologies for application

Answer: A