does anyone know the answer.

What is the inverse of the following statement?

If ∆ABC is equilateral, then it is isosceles.


A. If ∆ABC is not equilateral, then it is not isosceles.


B. If ∆ABC is isosceles, then it is equilateral.


C. If ∆ABC is equilateral, then it is isosceles.


D. If ∆ABC is not isosceles, then it is not equilateral.