What key features do Web Scale infrastructure and applications share that contribute to their success?

A.
Intelligent hyper-optimized applications, clustered architecture, low OPEX, and HA design

B.
HA design, distributed architecture, low OPEX, and design for failure

C.
Clustered architecture, design for failure, HA design, and intelligent hyper-optimized applications

D.
Design for failure, intelligent hyper-optimized applications, distributed architecture, and low OPEX

Explanation: