Lines & Angles

Statements a and b are as given
below:
a : If two lines intersect, then the vertically opposite angles are equal.
b : If a transversal intersects, two other lines, then the sum of two
interior angles on the same side of the transversal is 180°.
Then
(a) Both a and b are true (b) a is true and b is false
(c) a is false and b is true (d) both a and b are false