The diagram is a quadrilateral with intersecting diagonals and perpendicular to each other. Where AB=AD, BC=DC, and the length from D to the diagonal intersection point is 5, and the length from C to the diagonal intersection point is 12. Find B C.
Choices:
A:5
B:9
C:12
D:13
Please directly answer the question and provide the correct option letter, e.g., A, B, C, D.
Question: The diagram is a quadrilateral with intersecting diagonals and perpendicular to each other. Where AB=AD, BC=DC, and the length from D to the diagonal intersection point is 5, and the length from C to the diagonal intersection point is 12. Find B C.
Choices:
A:5
B:9
C:12
D:13
Please first conduct reasoning, and then answer the question and provide the correct option letter, e.g., A, B, C, D, at the end.
Question: The diagram is a quadrilateral with intersecting diagonals and perpendicular to each other. Where AB=AD, BC=DC, and the length from D to the diagonal intersection point is 5, and the length from C to the diagonal intersection point is 12. Find B C.
Choices:
A:5
B:9
C:12
D:13