Given 11 is conguent to 3, which lines, if any, must be parallel based on the given information? Justify your conclusion
A. a || b, Converse of the Alternate Exterior Angles Theorem
B. c || d, Converse of the Same-Side Interior Angles Theorem
C. a || b, Converse of the Corresponding Angles Theorem
D. not enough information to make a conclusion