Which of the following are Twelve Factor application principles? Note: There are 2 correct answers to this question

Which of the following are Twelve Factor application principles? Note: There are 2 correct answers to this question
A . Strictly separate build and run stages
B . Do not strictly separate build and run stages
C . One codebase tracked in revision control, one deploy
D . One codebase tracked in revision control, many deploys

Answer: A,D