How can you make sure the bean from extension A doesn't override the one from extension B?

How can you make sure the bean from extension A doesn’t override the one from extension B?

You are implementing two new independent extensions, extension A and extension B, both of which extend and overwrite a bean of the core platform.

How can you make sure the bean from extension A doesn’t override the one from extension B? Note: There are 2 correct answer to this question.

A. Use the beans’ parent attribute in extension B to specify the core bean.

B. Add only one of the extensions into localextensions.xml at the same time.

C. The beans are loaded in alphabetical order; therefore, extension B takes precedence.

D. Define a dependency wherein extension B requires extension A.

Answer: A,D