How can you ensure that certain code exists only in the development $($debug$)$ build and not in the release build of an Android app?

a$.$

Use conditional statements to include or exclude the code based on the build type.

b$.$

Add an extra layer of security to restrict access to the code.

c$.$

Rename the code file to make it exclusive to the debug build.

d$.$

Split the code into separate modules, with one module specific to the debug build.