We have the following:
An isoceles triangle is that it has two equal sides and an equilateral triangle is that all sides are equal.
A.
It has two equal sides, therefore it is an isoceles triangle
B.
It has two equal sides, therefore it is an isoceles triangle
C.
It is not possible to determine since an angle of 60 ° does not determine the size of the other two angles
D.
It has two equal angles, which means that it has two equal sides, therefore it is an isoceles triangle.