Which type of data store will provide the lowest latency to retrieve the data?

Your company is designing a database that will contain session data for a website. The data will include notifications, personalization attributes, and products that are added to a shopping cart.

Which type of data store will provide the lowest latency to retrieve the data?
A . key/value
B . graph
C . columnar
D . document

Answer: C

Explanation:

Reference: https://docs.microsoft.com/en-us/azure/architecture/data-guide/technology-choices/analytical-data-stores