ΔABC is located at A (3, 1), B (4, 4), and C (5, 1). Zackery says that ΔABC is an equilateral triangle, while Verna says that it is an isosceles triangle. Who is correct?

Zackery, because all of the sides are congruent
Zackery, because there are no congruent sides
Verna, because segment BC ≅ segment AC
Verna, because segment AB ≅ segment BC