Suppose ABC is a triangle with AB of unit length. D and E are the points lying on AB and AC respectively such that BC and DE are parallel. If the area of triangle ABC is twice the area of the triangle ADE, then the length of AD is

Suppose ABC is a triangle with AB of unit length. D and E are the poin

1.	Suppose ABC is a triangle with AB of unit length. D and E are the points lying on AB and AC respectively such that BC and DE are parallel. If the area of triangle ABC is twice the area of the triangle ADE, then the length of AD is
A.	½ unit
B.	1/3 unit
C.	1/√2 unit
D.	1/√3 unit
Answer» D. 1/√3 unit