What response is returned to the web client?

Refer to the exhibit.

The default scope in choice router recursively calls the color flow.

A web client sends a PUT request to the HTTP listener with payload Blue.

What response is returned to the web client?
A . "Blk"
B . "Green"
C . A timeout error
D . ["Blue", "Red", "Blk"]

Answer: A

Explanation:

Sequence can be described as follows.

* When web client sends the request, it sends payload as Blue (mentioned in question)

* In first iteration this will go to default choice, which sets payload to Red

* Via default route, flow will call itself with payload as Red

* In second iteration, as payload is Red, it will go to first route in choice router which will set payload to Blk and second iteration will end returning back payload as Blk to first iteration.

* This Blk will be again set to payload and first iteration will end returning back response as Blk