________ computing allows service providers to make computing resources and infrastructure management available to customers as needed and then charges a ________ rate.

A) Grid; fixed
B) Grid; variable
C) Utility; fixed
D) Utility; variable

Utility Computing

A service provisioning model in which computing resources are provided and billed like traditional utilities such as electricity.

Variable Rate

An interest rate that can change over the duration of a loan, typically based on underlying benchmarks or indexes affecting the cost of lending.