Map the below listed cognitive service to the correct category. 
Category 1: Decision API 
Category 2: Language API 
Category 3: Vision API 
Cognitive Service 1: QnA maker 
Cognitive Service 2: Video Indexer 
Cognitive Service 3: Personalizer

Answer options:

A.Category 1: Cognitive Service 1, Category 2: Cognitive Service 2, Category 3: Cognitive Service 3
B.Category 1: Cognitive Service 3, Category 2: Cognitive Service 2, Category 3: Cognitive Service 1
C.Category 1: Cognitive Service 1, Category 2: Cognitive Service 3, Category 3: Cognitive Service 2
D.Category 1: Cognitive Service 3, Category 2: Cognitive Service 1, Category 3: Cognitive Service 2

Correct Answer:D
Option A is INCORRECT. Personalizer is a Decision API, QnA maker is a Language API, and Video Indexer is Vision API.
Option B is INCORRECT. Personalizer is a Decision API, QnA maker is a Language API, and Video Indexer is Vision API.
Option C is INCORRECT. Personalizer is a Decision API, QnA maker is a Language API, and Video Indexer is Vision API. 
Option D is CORRECT. Personalizer is a Decision API, QnA maker is a Language API, and Video Indexer is Vision API.
Reference: 

https://docs.microsoft.com/en-us/azure/cognitive-services/what-are-cognitive-services