What is the impact?

A company plans to apply updates to a Dynamics 365 Finance environment. The environment has custom code.

You need to determine the impact of updates to the custom code.

What is the impact?
A . Updates are runtime backward compatible only.
B. Updates are backward compatible from both a design time and runtime perspective.
C. Updates are design-time backward compatible only.
D. Updates are not backward compatible from either a design-time or runtime perspective.

Answer: B

Explanation:

Reference: https://docs.microsoft.com/en-us/dynamics365/fin-ops-core/dev-itpro/lifecycle-services/oneversion-isv