Which of the registration patterns is best suited for complex architecture? A. Client side discovery pattern B. Third party registration pattern C. Self registration

"Option A" is the correct answer to this question.

Explanation:

The customer is using this pattern for both the determination of network places services offered and for load balance requests. It offers a API to handle licensing of service situations and to query accessible cases, and other choices were wrong, that can be described as follows:

In option B, It is a service registrar, that track the changes, that's why it is wrong. In option C, It is used in registering detail, that's why it is incorrect.