Jinjiang abc chaopai photography

∫△ABC is an equilateral triangle, and AD is the height on the side of BC.

∴AD vertically divides BC,

∴BF=CF,BE=CE,BD=CD，

Ef is a common edge,

∴△BEF≌△CEF，

∴S△BEF=S△CEF，

∴ The shaded area is half the area of △ABC,

∫S△ABC = 12，

The shaded area is 6.

So choose B.