The correct choice that indicates that \( AB \leftrightarrow \) is the perpendicular bisector of \( CD \leftrightarrow \) if they intersect at \( P \) is:
AC¯¯¯¯¯¯¯¯⊥BD¯¯¯¯¯¯¯¯ and AP¯¯¯¯¯¯¯¯≅BP¯¯¯¯¯¯¯¯
This implies that line segment \( AB \) is perpendicular to line segment \( CD \) at point \( P \) and that the segments \( AP \) and \( BP \) are congruent, which is the definition of a perpendicular bisector.