Which classification of placental separation is not recognized as an abnormal adherence pattern?
Correct Answer: D
Rationale: The correct answer is D: Placenta abruptio. Placenta abruptio is not a type of abnormal adherence pattern; instead, it refers to the premature detachment of a normally implanted placenta. Placenta accreta, increta, and percreta are abnormal adherence patterns where the placenta attaches too deeply into the uterine wall. Accreta is when it attaches but does not penetrate, increta is when it penetrates into the myometrium, and percreta is when it penetrates through the myometrium. Therefore, Placenta abruptio is the correct answer as it does not fall under the category of abnormal adherence patterns like the other choices.