According to the NIST $($National Institute of Standards and Technology$),$ which of the following is NOT an essential characteristics of clouds?

Question $10$ options:

The computing resource owned by the provider should be pooled to serve multiple users and with the ability to assign and reassign resource dynamically

It should be possible to acquire and release resources elastically, perhaps even automatically, to scale immediately with the users$$ demands

It must provide IAAS, PAAS, and SAAS

Users should be able to provision resources automatically, without requiring human interaction