Which two types of files can you use?

A company has an application that provides API access. You plan to connect to the API from a canvas app by using a custom connector.

You need to request information from the API developers so that you can create the custom connector.

Which two types of files can you use? Each correct answer presents a complete solution. NOTE: Each correct selection is worth one point.
A . YAML
B . WSDL
C . OpenAPI definition
D . Postman collection

Answer: C,D

Explanation:

OpenAPI definitions or Postman collections can be used to describe a custom connector.

Reference: https://docs.microsoft.com/en-us/connectors/custom-connectors/faq