Question

Which statement is true about the following argument?




Argument:
If two lines are perpendicular, then they intersect to form right angles.
Lines AB and CD intersect to form right angles.
Therefore, lines AB and CD are perpendicular.




The conclusion is true, and the argument is valid by the Law of Syllogism.

The conclusion is true, but the argument is not valid.

The conclusion is true, and the argument is valid by the Law of Detachment.

The conclusion is false, and the argument is not valid.