The answer is (B)
two triangles are similar if:
a) 3 angles of 1 triangle are the same as 3 angles of the other.
or b) 3 pairs of corresponding sides are in the same ratio
or c) An angle of 1 triangle is the same as the angle of the other triangle and the sides containing these angles are in the same ratio.
since we can know that we are dealing with similar triangles based on a).
we can tell the height of C, from statement 2 alone.