To solve this question, the user needs to know about the objectives of reviews, static analysis, and dynamic testing.

Reviews, static analysis, and dynamic testing have the same objective of identifying defects.

Option A is the correct answer.

Option B is incorrect because fixing defects is not the objective of reviews, static analysis, and dynamic testing. Their objective is to identify defects so that they can be reported for fixing.

Option C is incorrect because the statement "1 and 2" is not clear. It is not clear what "2" is referring to, and it is unclear how it is related to the objective of identifying defects.

Option D is incorrect because, as mentioned earlier, the objective of reviews, static analysis, and dynamic testing is to identify defects. Therefore, the statement "None" is incorrect.

The Answer is: A