What can we conclude about the triangles on the line shown below?

Answer:
Conclusion :
The correct option is B
Triangles are similar and they have the same slope.
Step-by-step explanation:
Given:
BC || FE
BA || DE
CA || DF
Conclusion: ?
Explanation:
In Δ ABC and Δ DEF
∠B ≅ ∠E ..............{measure of each angle is 90° }
∠C ≅ ∠F ……….....{alternate angles equal since BC || FE}
Δ ABC ~ Δ DEF ….{Angle-Angle Similarity test}
Also we know that parallel lines have slopes equal
Therefore,
BC || FE
BA || DE
CA || DF
Conclusion :
The correct option is B
Triangles are similar and they have the same slope.