Which diagram shows the medians of a triangle?

4 triangles with medians. Clockwise, triangle 1, 3 medians intersect, unequal angles. Triangle 2, 3 medians intersect. Triangle 3, 2 medians intersect and vertex median intersects the other 2 medians. Right triangle 4, median from left base vertex.
A.
triangle 1
B.
triangle 2
C.
triangle 3
D.
triangle 4