Answer:
B. A problem has occurred that might impact functionality that is external to the application or component that triggered the event.
D. An issue has occurred that can impact service or Result in a more serious problem if action is not taken.
Step-by-step explanation:
C is not an option as the program ran successfully, and hence no warning was triggered.
A. is not an option as the failure occurs, and its impossible to automatically get rid of it. Hence, this is a failure and not a warning.
B and D are definitely a warning. And hence, the above choices. They clearly are situation in which a warning is being given, and the computer program ends with wrong answer, as the functionality is effected.