Which two risks should the Architect communicate to the Client about this solution?

The Client wants to have a flash sate on a few products every day. These products are sold through B2C Commerce as well as an in store Point of Sale system that it tied to the same inventory.

An Architect analyzes the following proposed solution:

Inventory feed w*l continue to run daily but add a web-service call to compare and update B2C Commerce inventory in real time during checkout after a flash product’s inventory reaches a threshold.

Which two risks should the Architect communicate to the Client about this solution? Choose 2 answers
A . The default rate limiter configuration for the web-service could cause the web-service to return an exception during high traffic.
B. If the externals hosted web-service is unreliable. It could be a point of failure in the site s order placement flow.
C. If the product Inventory threshold that triggers the web service calls is reached too often.
It will have a negative Impact on site performance.
D. Because the job would still be configured to run daily there will be a degrade in performance during non-flash sales periods

Answer: B,C