Applying which AWS Cloud design principle will address the current design issue?

A company’s web application currently has light dependencies on underlying components so when one component fails the entire web application fails.

Applying which AWS Cloud design principle will address the current design issue?
A . Implementing elasticity enabling the application to scale up or scale down as demand changes
B . Enabling several EC2 instances to run in parallel to achieve better performance
C . Focusing on decoupling components by isolating them and ensuring individual components can function when other components
D . Doubling EC2 computing resources to increase system fault tolerance

Answer: C