Which of the following is NOT true about cloud computing?

$1.$

With cloud computing, companies can easily scale up and down the amount of services used

$2.$

Computing resources are charged based on the amount of resources actually used $($per$-$use fee$)$ or the subscription $($monthly fee$)$

$3.$

Cloud services are delivered over the network, primarily the Internet.

$4.$

Cloud computing is an application of massively parallel computing