Four equilateral triangles are inscribed within each other a

Four equilateral triangles are inscribed within each other as pictured here. If the perimeter of the outer triangle is 24, what is the area of the innermost triangle?

A. \frac{1}{6}

B. \sqrt{3}/8

C. \frac{1}{3}

D. \sqrt{2}/4

E. \sqrt{3}/4