On a merchant website you inherit an extension that allows customers to rate products. The extension adds two integer attributes to store the rating values, avg_rating and rating_count. The merchant reports an issue that the displayed average is lower than it should be. You determine you need to change the avg_rating attribute backend typetodecim to fix the issue.
In your module's Data Patch script, which three steps do you take to change the attribute backend type?
A)

B)

C)

D)

E)