Which of the following are true?
1. Two circles with the same circumference are congruent.
2. Two squares with the same area are congruent.
3. Two rectangles with the same perimeter are congruent.
4. Two triangles with the same areas are congruent.

a. 1 and 2 only
b. 3 and 4 only
c. 2, 3 and 4 only
d. 1, 2, 3 and 4