Which of the relations below is a function?Group of answer choices{(2,3), A(3,4), (5,1), (6,2), (2,4)B}{(2,3), (3,4), (5,1), (6,2), (7,3)}C{(2,3), (3,4), (5,1), (6,2), (3,3)}

In the first triangle 80+20+p=180 (since sum of all angles of a triangle is 180)so p= 80also in second triangle 55+45+q=180 (since sum of all angles of a triangle is 180)so q=80so we can conclude that p=80 degrees q=80 degrees so p=q=80 degreeshence option b is correct