An Internet company uses Huawei Cloud to deploy its business. The operation and maintenance personnel found that the weekly traffic peak basically occurs on Friday night, which is about 30% to 40%…

An Internet company uses Huawei Cloud to deploy its business. The operation and maintenance personnel found that the weekly traffic peak basically occurs on Friday night, which is about 30% to 40% higher than usual, resulting in slow business response. The company decided to purchase new resources (cloud services such as AS+ECS) on Huawei Cloud to solve this problem. Considering factors such as cost, which of the following payment methods is the most appropriate when choosing an elastic cloud server?