An Alexa Skill Builder Published a Skill and Now Wants

An Alexa Skill Builder published a skill and now wants to update it. Which of the following changes will make it necessary to have the skill re-certified? (Choose two.)

A) Adding a new intent in the interaction model
B) Changing the text of a skill response
C) Adding a sentence to the skill description
D) Changing the URL of the image on a skill card
E) Updating the backend to point to a new database