Refer to the exhibit.

An application has been developed to serve the users in an enterprise After HTTP cache controls are implemented m the application users report that they receive state data when they refresh the page Without removing HTTP cache controls, which change ensures that the users get current data when refreshing the page’
A . Reduce the expire_after value to 60.
B . Add a Cache-Control header that has a value of no-cache, no-store must-revalidate.
C . Add an H-None-Match header that has a value of an Entity Tag.
D . Add an Expires header that has a value of 0.

Answer: B