John travels a lot and he needs to access his documents and services on the go. which of these technologies allows his to access documents and software while on the move?

If the answers are: (there is more than one correct answer)

a. cloud computing

b. grid computing

c. mobile computing

d. green computing

e. virtualization

Then it's (a) and (c). First off, cloud computing gives you a system called like this where you can store anything on this cloud. When you go wherever and go to your cloud, those same files are still there for you to access. Second, mobile computing is, basically, for mobile use (e.g. laptop, smartphone, tablet) to look at the files you need to use at the time.

where and what are the statements?