When the back-end server group corresponding to HUAWEI CLOUD ELB contains multiple ECS instances, if the external processing capabilities of the Ecs instances are different, in order to make full use of the processing capabilities of the ECS instances. Which of the following options is the most reasonable?

When the back-end server group corresponding to HUAWEI CLOUD ELB contains multiple ECS instances, if the external processing capabilities of the Ecs instances are different, in order to make full use of the processing capabilities of the ECS instances. Which of the following options is the most reasonable?
A . The purpose of ELB is to balance the load between ECs instances in the background. Unable to allocate more requests to a certain type of cS instance.
B . Assign higher weights to ECS instances with strong processing capabilities. The higher the weight, the more access requests will be allocated.
C . Distribute tasks according to the polling mode, and a strong cCS instance will be able to distribute more requests.
D . Distribute tasks according to the mode of the minimum number of connections, and more capable ECS instances will be able to allocate more requests.

Answer: B