What are the prerequisites for implementing account linking for Amazon Alexa smart home skills?

What are the prerequisites for implementing account linking for Amazon Alexa smart home skills?
A . OAuth 2.0 with either implicit grant flow or authorization code grant flow
B . OAuth 2.0 with authorization code grant flow
C . OpenID Connect wit JSO
D . Web Token (JWT)
E . OAuth 1.0/2.0 with implicit grant flow

View Answer

Answer: B

Explanation:

Reference: https://developer.amazon.com/en-US/docs/alexa/account-linking/account­linking-for-sh-andother.html#prerequisites