Find A B if \triangle A B C is an isosceles triangle with A B \cong B C.
Choices:
A:3
B:4
C:7
D:11
Please directly answer the question and provide the correct option letter, e.g., A, B, C, D.
Question: Find A B if \triangle A B C is an isosceles triangle with A B \cong B C.
Choices:
A:3
B:4
C:7
D:11
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: Find A B if \triangle A B C is an isosceles triangle with A B \cong B C.
Choices:
A:3
B:4
C:7
D:11