If a quadrilateral has perpendicular diagonals, then it is a rectangle.
Which of the following arguments is valid with respect to the conditional statement premise above?
1. A quadrilateral is a rectangle.
Therefore, it has perpendicular diagonals.
2. A quadrilateral does not have perpendicular diagonals.
Therefore, it is not a rectangle.
3. A quadrilateral has perpendicular diagonals.
Therefore, it is a rectangle.
4. A quadrilateral is not a rectangle.
Therefore, it does not have perpendicular diagonals.
A. 3 and 4
B. 1 only
C. 1 and 3
D. None of the arguments are valid.