Two isosceles Triangles have equal vertical angles and their areas are in the ratio 16:49. Find the ratio of their corresponding heights .	Answers:  A) 4 / 5  B) 5 / 4  C) 3 / 2  D) 4 / 7  E) 2 / 3

Rationale: "we are basically given that the triangles are similar . in two similar triangles , the ratio of their areas is the square of the ratio of their sides and also , the square of the ratio of their corresponding heights . therefore , area / area = height ^ 2 / height ^ 2 = 16 / 49 - - > height / height = 4 / 7 . answer : d ."
Answer: D