Which of the following statements is true? a. in order to lease cloud-based it resources, a cloud consumer’s up-front investment costs must increase when compared to the up-front costs required to purchase the same it resources as part of an on-premise environment. b. a required characteristic of on-premise environments is that they are resilient so as to provide high availability and reliability. this allows an on-premise saas product to be widely accessible by multiple cloud service consumers. c. when leasing it resources provided by a public cloud, cloud consumers are required to pay only for the amount of actual usage.