a) The massive scale of cloud computing systems was enabled by the popularization of the Internet
b) Soft computing represents a real paradigm shift in the way in which systems are deployed
c) Cloud computing makes the long-held dream of utility computing possible with a pay-as-you-go, infinitely scalable, universally available system
d) All of the mentioned

Answer: b
Explanation: Cloud Computing is distinguished by the notion that resources are virtual and limitless and that details of the physical systems on which software runs are abstracted from the user